Supplement to the currently effective Statement of
                      Additional Information for the fund:
              -----------------------------------------------------

DWS Core Plus Income Fund


The following  replaces similar disclosure under "Purchases - Financial Services
Firms' Compensation":

DIDI may at its  discretion  compensate  investment  dealers or other  financial
services  firms in  connection  with the sale of Class A shares  of the Funds in
accordance  with the  Large  Order  NAV  Purchase  Privilege  and one of the two
compensation schedules up to the following amounts:

<TABLE>
<CAPTION>
Compensation Schedule #1:                                                        Compensation Schedule #2:
Retail Sales and DWS Flex Plan(1)                                                 DWS Retirement Plans(2)
---------------------------------                                                 -----------------------

Amount of                                   As a Percentage of Net    Amount of Shares      As a Percentage of Net
Shares Sold                                       Asset Value               Sold                 Asset Value
-----------                                       -----------               ----                 -----------
<S>                                                  <C>                     <C>                    <C>
$1 million to $3 million                             0.85%
Over $3 million to $50 million                       0.50%             Over $3 million          0.00% - 0.50%
Over $50 million                                     0.25%                    --                       --
</TABLE>

(1)       For purposes of determining the appropriate  commission  percentage to
          be applied to a particular  sale under the  foregoing  schedule,  DIDI
          will  consider the  cumulative  amount  invested by the purchaser in a
          Fund and other Funds listed under "Special  Features -- Class A Shares
          -- Combined Purchases,"  including purchases pursuant to the "Combined
          Purchases,"  "Letter of Intent"  and  "Cumulative  Discount"  features
          referred to above.

(2)       Compensation Schedule 2 applies to employer sponsored employee benefit
          plans  using  the  OmniPlus  subaccount  record  keeping  system  made
          available  through  ADP,  Inc.  under an  alliance  with  DIDI and its
          affiliates.



The  following  replaces  similar  disclosure  under  "Purchases  -  Multi-Class
Suitability":


Multi-Class Suitability. DIDI has established the following procedures regarding
the purchase of Class A, Class B and Class C shares.  Orders to purchase Class B
shares of $100,000 or more and orders to purchase  Class C shares of $500,000 or
more will be declined  with the  exception  of orders  received  from  financial
representatives  acting  for  clients  whose  shares  will be held in an omnibus
account and employer-sponsored  employee benefit plans using the Flex subaccount
record keeping system ("System") maintained for DWS Investments-branded plans on
record keeping  systems made available  through ADP, Inc. under an alliance with
DIDI and its affiliate ("DWS Investments Flex Plans").

The following provisions apply to DWS Investments Flex Plans.

a. Class B Share DWS Investments  Flex Plans.  Class B shares have not been sold
to DWS Investments  Flex Plans that were established on the System after October
1,  2003.  Orders to  purchase  Class B shares for a DWS  Investments  Flex Plan
established  on the  System  prior to October  1, 2003 that has  regularly  been
purchasing  Class B shares  will be  invested  instead  in Class A shares at net
asset value when the combined  subaccount  value in DWS Funds or other  eligible
assets held by the plan is $100,000 or more.  This provision will be imposed for
the first purchase after  eligible plan assets reach the $100,000  threshold.  A
later decline in assets below the $100,000  threshold will not affect the plan's
ability to continue to purchase Class A shares at net asset value.



<PAGE>

b. Class C Share DWS Investments  Flex Plans.  Orders to purchase Class C shares
for a DWS Investments Flex Plan, regardless of when such plan was established on
the System,  will be invested  instead in Class A shares at net asset value when
the combined  subaccount value in DWS Funds or other eligible assets held by the
plan is  $1,000,000  or more.  This  provision  will be  imposed  for the  first
purchase  after  eligible plan assets reach the  $1,000,000  threshold.  A later
decline  in assets  below the  $1,000,000  threshold  will not affect the plan's
ability to continue to purchase Class A shares at net asset value.

The procedures  described  above do not reflect in any way the  suitability of a
particular  class of shares for a  particular  investor and should not be relied
upon as such. A  suitability  determination  must be made by investors  with the
assistance of their financial representative.

To sell  shares  by bank wire you will  need to sign up for  these  services  in
advance when completing your account application.













               Please Retain This Supplement for Future Reference



August 8, 2008