Supplement to the currently effective  Statements of Additional  Information for
the listed Fund:

DWS Strategic Income Fund

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The following information  supplements  information contained in the "Investment
Policies and Techniques" section of the fund's SAIs:

Investment Company Securities. A fund may acquire securities of other investment
companies to the extent consistent with its investment objective and subject to
the limitations of the 1940 Act. A fund will indirectly bear its proportionate
share of any management fees and other expenses paid by such other investment
companies.

For example, a fund may invest in a variety of investment companies which seek
to track the composition and performance of specific indexes or a specific
portion of an index. These index-based investments hold substantially all of
their assets in securities representing their specific index. Accordingly, the
main risk of investing in index-based investments is the same as investing in a
portfolio of equity securities comprising the index. The market prices of
index-based investments will fluctuate in accordance with both changes in the
market value of their underlying portfolio securities and due to supply and
demand for the instruments on the exchanges on which they are traded (which may
result in their trading at a discount or premium to their NAVs). Index-based
investments may not replicate exactly the performance of their specified index
because of transaction costs and because of the temporary unavailability of
certain component securities of the index.

Examples of index-based investments include:

SPDRs(R): SPDRs, an acronym for "Standard & Poor's Depositary Receipts," are
based on the S&P 500 Composite Stock Price Index. They are issued by the SPDR
Trust, a unit investment trust that holds shares of substantially all the
companies in the S&P 500 in substantially the same weighting and seeks to
closely track the price performance and dividend yield of the Index.

MidCap SPDRs(R): MidCap SPDRs are based on the S&P MidCap 400 Index. They are
issued by the MidCap SPDR Trust, a unit investment trust that holds a portfolio
of securities consisting of substantially all of the common stocks in the S&P
MidCap 400 Index in substantially the same weighting and seeks to closely track
the price performance and dividend yield of the Index.

Select Sector SPDRs(R): Select Sector SPDRs are based on a particular sector or
group of industries that are represented by a specified Select Sector Index
within the Standard & Poor's Composite Stock Price Index. They are issued by The
Select Sector SPDR Trust, an open-end management investment company with nine
portfolios that each seeks to closely track the price performance and dividend
yield of a particular Select Sector Index.

DIAMONDS(SM): DIAMONDS are based on the Dow Jones Industrial Average(SM). They
are issued by the DIAMONDS Trust, a unit investment trust that holds a portfolio
of all the component common stocks of the Dow Jones Industrial Average and seeks
to closely track the price performance and dividend yield of the Dow.

Nasdaq-100 Shares: Nasdaq-100 Shares are based on the Nasdaq-100 Index. They are
issued by the Nasdaq-100 Trust, a unit investment trust that holds a portfolio
consisting of substantially all of the securities, in substantially the same
weighting, as the component stocks of the Nasdaq-100 Index and seeks to closely
track the price performance and dividend yield of the Index.

WEBs(SM): WEBs, an acronym for "World Equity Benchmark Shares," are based on 17
country-specific Morgan Stanley Capital International Indexes. They are issued
by the WEBs Index Fund, Inc., an open-end management investment company that
seeks to generally correspond to the price and yield performance of a specific
Morgan Stanley Capital International Index.

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The DWS  Strategic  Income Fund may invest in shares of DWS  Floating  Rate Plus
Fund.  DWS  Floating  Rate Plus Fund seeks to provide high  current  income.  It
pursues its objective by investing, under normal circumstances,  at least 80% of
its total  assets in  adjustable  rate loans that have a senior right to payment
("Senior Loans") and other floating rate debt securities. The fund also seeks to
enhance returns by employing a global tactical asset allocation strategy that is
implemented through the use of derivatives.

CERTAIN INVESTMENT POLICIES AND TECHNIQUES OF DWS FLOATING RATE PLUS FUND

DWS Floating Rate Plus Fund invests primarily in Senior Loans and may borrow for
investment  purposes,  as described  below.  See DWS  Floating  Rate Plus Fund's
prospectus and Statement of Additional  Information for a complete discussion of
its investment policies and techniques.

Senior Loans.  DWS Floating  Rate Plus Fund may invest in Senior  Loans.  Senior
Loans are direct  obligations of corporations or other business entities and are
generally  arranged by banks or other commercial  lending  institutions and made
generally to finance internal growth, mergers,  acquisitions,  stock repurchases
and leveraged buyouts. Senior Loans may include restrictive covenants which must
be maintained by the borrower. Such covenants, in addition to the timely payment
of interest and principal,  may include mandatory prepayment  provisions arising
from free cash flow,  restrictions on dividend payments and usually state that a
borrower must maintain specific minimum financial ratios as well as establishing
limits on total debt. A breach of covenant, which is not waived by the agent, is
normally  an event of  acceleration,  i.e.,  the agent has the right to call the
outstanding  Senior Loan.  In addition,  loan  covenants  may include  mandatory
prepayment  provisions stemming from free cash flow. Free cash flow is cash that
is in excess of capital expenditures plus debt service requirements of principal
and interest. The free cash flow shall be applied to prepay the Senor Loan in an
order of maturity  described in the loan documents.  Under certain  interests in
Senior  Loans,  the fund may have an obligation  to make  additional  loans upon
demand by the  borrower.  The fund intends to reserve  against  such  contingent
obligations by segregating  sufficient assets in high quality  short-term liquid
investments or borrowing to cover such obligations.

The  fund's  investment  in  Senior  Loans may take the form of  purchase  of an
assignment  or a portion of a Senior Loan from a third party  ("assignment")  or
acquiring a participation in a Senior Loan ("participation"). The fund may pay a
fee  or  forego  a  portion  of  interest  payments  to  the  lender  selling  a
participation or assignment under the terms of such participation or assignment.
When the fund is a purchaser of an assignment,  it typically succeeds to all the
rights and  obligations  under the loan  agreement of the  assigning  lender and
becomes a lender under the loan agreement  with the same rights and  obligations
as the assigning  lender.  Assignments  are,  however,  arranged through private
negotiations between potential assignees and potential assignors, and the rights
and  obligations  acquired by the purchaser of an assignment may be more limited
than  those  held  by  the  assigning  lender.  The  fund  may  also  invest  in
participations  in Senior  Loans.  With respect to any given  Senior  Loan,  the
rights of the fund when it acquires a participation may be more limited than the
rights of the  original  lenders or of  investors  who  acquire  an  assignment.
Participations may entail certain risks relating to the  creditworthiness of the
parties from which the participations are obtained.

In a typical  interest in a Senior Loan, the agent  administers the loan and has
the right to monitor the collateral. The agent is also required to segregate the
principal  and interest  payments  received  from the borrower and to hold these
payments for the benefit of the lenders. The fund normally looks to the agent to
collect and distribute principal of and interest on a Senior Loan.  Furthermore,
the fund looks to the agent to use normal credit remedies,  such as to foreclose
on  collateral;  monitor  credit loan  covenants;  and notify the lenders of any
adverse  changes  in the  borrower's  financial  condition  or  declarations  of
insolvency.  In the event of a default by the borrower,  it is possible,  though
unlikely, that the fund could receive a portion of the borrower's collateral. If
the fund receives collateral other than cash, such collateral will be liquidated
and the cash received from such  liquidation will be available for investment as
part of the  fund's  portfolio.  At times the fund may also  negotiate  with the
agent regarding the agent's exercise of credit remedies under a Senior Loan. The
agent is  compensated  for these services by the borrower as is set forth in the
loan  agreement.  Such  compensation  may take the form of a fee or other amount
paid upon the making of the Senior Loan and/or an ongoing fee or other amount.

The loan  agreement in  connection  with Senior Loans sets forth the standard of
care to be exercised by the agents on behalf of the lenders and usually provides
for the  termination  of the agent's agency status in the event that it fails to
act  properly,  becomes  insolvent,  enters  FDIC  receivership,  or if not FDIC
insured,  enters into bankruptcy or if the

<PAGE>

agent  resigns.  In the event an agent is unable to perform its  obligations  as
agent, another lender would generally serve in that capacity.

The fund believes  that the  principal  credit risk  associated  with  acquiring
Senior Loans from another lender is the credit risk associated with the borrower
of the  underlying  Senior  Loan.  The fund may incur  additional  credit  risk,
however,  when the fund acquires a  participation  in a Senior Loan from another
lender  because the fund must assume the risk of insolvency or bankruptcy of the
other  lender from which the Senior Loan was  acquired.  However,  in  acquiring
Senior  Loans,  the fund  conducts an analysis and  evaluation  of the financial
condition of each such lender.  The fund has taken the following  measures in an
effort to reduce such risks. The fund will only acquire participations in Senior
Loans  if  the  lender  selling  the   participation,   and  any  other  persons
interpositioned  between the fund and the lender,  at the time of investment has
outstanding  debt or deposit  obligations  rated investment grade (BBB or A-3 or
higher by Standards & Poor's  Ratings  Group  ("S&P") or Baa or P-3 or higher by
Moody's  Investors  Service  ("Moody's"))  or determined by the Advisor to be of
comparable quality. Long-term debt rated BBB by S&P is regarded by S&P as having
adequate  capacity to pay  interest  and repay  principal  and debt rated Baa by
Moody's is regarded by Moody's as a medium grade obligation, i.e., it is neither
highly protected nor poorly secured. Commercial paper rated A-1 by S&P indicates
that the degree of safety  regarding  timely  payment is considered by S&P to be
either  overwhelming or very strong and issues of commercial paper rated Prime-1
by Moody's are considered by Moody's to have a superior ability for repayment of
senior short-term debt obligations.

Senior Loans,  unlike certain bonds,  usually do not have call protection.  This
means that interests comprising the fund's portfolio,  while having a stated one
to ten-year  term,  may be prepaid,  often without  penalty.  The fund generally
holds  Senior Loans to maturity  unless it has become  necessary to sell them to
adjust the fund's  portfolio in accordance with the Advisor's view of current or
expected economic or specific industry or borrower conditions.

Senior Loans frequently  require full or partial prepayment of a loan when there
are asset sales or a securities  issuance.  Prepayments on Senior Loans may also
be made by the borrower at its  election.  The rate of such  prepayments  may be
affected by, among other things,  general business and economic  conditions,  as
well as the financial status of the borrower.  Prepayment would cause the actual
duration of a Senior Loan to be shorter than its stated maturity. Prepayment may
be deferred by the fund. This should,  however,  allow the fund to reinvest in a
new loan and recognize as income any unamortized loan fees. This may result in a
new facility fee payable to the fund.

Because  interest rates paid on these Senior Loans  periodically  fluctuate with
the market,  it is expected that the prepayment  and a subsequent  purchase of a
new Senior Loan by the fund will not have a material adverse impact on the yield
of the portfolio. See "Portfolio Transactions."

Under a Senior Loan,  the borrower  generally  must pledge as collateral  assets
which may  include  one or more of the  following:  cash;  accounts  receivable;
inventory; property, plant and equipment; both common and preferred stock in its
subsidiaries;  trademarks,  copyrights,  patent rights; and franchise value. The
fund may also receive guarantees as a form of collateral.  In some instances,  a
Senior Loan may be secured  only by stock in a borrower or its  affiliates.  The
fund may also invest in Senior Loans not secured by any  collateral.  The market
value  of the  assets  serving  as  collateral  (if  any)  will,  at the time of
investment,  in the opinion of the Advisor, equal or exceed the principal amount
of the Senior  Loan.  The  valuations  of these  assets may be  performed  by an
independent  appraisal.  If the  agent  becomes  aware  that  the  value  of the
collateral  has declined,  the agent may take action as it deemed  necessary for
the  protection of its own  interests  and the  interests of the other  lenders,
including, for example, giving the borrower an opportunity to provide additional
collateral or accelerating  the loan. There is no assurance,  however,  that the
borrower  would provide  additional  collateral or that the  liquidation  of the
existing  collateral  would  satisfy the  borrower's  obligation in the event of
nonpayment of scheduled interest or principal,  or that such collateral could be
readily liquidated.

The fund may be required to pay and may receive  various fees and commissions in
the process of purchasing,  selling and holding Senior Loans.  The fee component
may include any, or a combination of, the following elements:  arrangement fees,
non-use fees, facility fees, letter of credit fees and ticking fees. Arrangement
fees are paid at the  commencement of a loan as compensation  for the initiation
of the  transaction.  A non-use fee is paid based upon the amount  committed but
not used  under  the  loan.  Facility  fees are  on-going  annual  fees  paid in
connection  with a loan.  Letter of credit  fees are paid if a loan  involves  a
letter of credit.  Ticking fees are paid from the initial

<PAGE>

commitment  indication until loan closing if for an extended period.  The amount
of fees is negotiated at the time of transaction.

If legislation or state or federal regulators impose additional  requirements or
restrictions  on the ability of  financial  institutions  to make loans that are
considered highly leveraged  transactions,  the availability of Senior Loans for
investment by the fund may be adversely affected. In addition, such requirements
or  restrictions  could  reduce or eliminate  sources of  financing  for certain
borrowers. This would increase the risk of default. If legislation or federal or
state regulators require financial  institutions to dispose of Senior Loans that
are considered  highly  leveraged  transactions  or subject such Senior Loans to
increased regulatory scrutiny, financial institutions may determine to sell such
Senior  Loans.  Such sales could  result in prices  that,  in the opinion of the
Advisor, do not represent fair value. If the fund attempts to sell a Senior Loan
at a time when a financial institution is engaging in such a sale, the price the
fund could get for the Senior Loan may be adversely affected.

Borrowing.  DWS  Floating  Rate  Plus  Fund may  borrow  money  from  banks  for
investment  purposes to the extent  permitted by the 1940 Act.  This practice is
known as  leverage.  Currently,  under the 1940 Act,  the fund may  borrow up to
one-third of its total assets  (including the amount borrowed)  provided that it
maintains  continuous asset coverage of 300% with respect to such borrowings and
sells (within three days) sufficient portfolio holdings to restore such coverage
if it should decline to less than 300% due to market  fluctuations or otherwise,
even if  disadvantageous  from an  investment  standpoint.  The fund may  borrow
through  other  means to the extent  permitted  by the 1940 Act.  In addition to
borrowing  for  leverage  purposes,  the  fund  also  may  borrow  money to meet
redemptions in order to avoid forced, unplanned sales of portfolio securities or
for  other  temporary  or  emergency  purposes.  This  allows  the fund  greater
flexibility  to  buy  and  sell  portfolio  securities  for  investment  or  tax
considerations, rather than for cash flow considerations.

The use of borrowing by the fund involves special risk  considerations  that may
not  be  associated   with  other  funds  having   similar   policies.   Because
substantially all of the fund's assets fluctuate in value,  whereas the interest
obligation  resulting  from a borrowing  may be fixed by the terms of the fund's
agreement with its lender,  the net asset value per share of the funds will tend
to increase  more when its portfolio  securities  increase in value and decrease
more when its portfolio securities decrease in value than would otherwise be the
case if the fund did not borrow funds. In addition, interest costs on borrowings
may fluctuate with changing market rates of interest and may partially offset or
exceed the return earned on borrowed funds. Under adverse market conditions, the
fund might have to sell  portfolio  securities  to meet  interest  or  principal
payments at a time when fundamental  investment  considerations  would not favor
such sales. The interest that the fund must pay on borrowed money, together with
any  additional  fees to  establish  and  maintain  a  borrowing  facility,  are
additional costs that will reduce or eliminate any net investment income and may
also offset any potential capital gains. Unless appreciation and income, if any,
on assets acquired with borrowed funds exceed the costs of borrowing, the use of
leverage will diminish the investment performance of the fund compared with what
it would have been without leverage.





               Please Retain This Supplement for Future Reference



October 16, 2007