Well, the item is in a section of the CHANGELOG that starts with:
```
Other changes to the API

For these changes, we are currently still allowing the old syntax for ease of
transition, but that syntax is now discouraged.  It is usually marked in the
code as being obsolete.  At some point (probably version 1.2) use of the old
syntax will raise a DeprecationWarning, and with version 2.0, it will be
removed.
```
Do you think that is insufficiently clear?  I'd rather not add this deprecation text to _every_ item in this section of the CHANGELOG.  (There are quite a few!)