===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.6/changes.html,v
retrieving revision 1.74
@@ -452,6 +452,16 @@
both in Objective-C and Objective-C++. Currently the only supported
attribute is <code>deprecated</code>.</li>
+ <li>Objective-C 2.0 class extensions are supported both in
+ Objective-C and Objective-C++. A class extension has the same
+ syntax as a category declaration with no category name, and the
+ methods and properties declared in it are added directly to the
+ main class. It is mostly used as an alternative to a category to
+ add methods to a class without advertising them in the public
+ headers, with the advantage that for class extensions the compiler
+ checks that all the privately declared methods are actually
+ implemented.</li>
+
<li>As a result of these enhancements, GCC can now be used to
build Objective-C and Objective-C++ software that uses Foundation
and other important system frameworks with the NeXT runtime on