Plans for Gtk+/GNOME 3.0 surfaced »

“Basically the main aim for Gtk+ 3.0 is to clean up everything..New features are planned for versions coming afterwards….One notable idea though is to flag all dropped functions as “deprecated” in an upcoming GTK+ 2.x release. The GNOME release team also plans to drop unnecessary/old code and to clean up the code base, and again the plan is to make this transition as smooth as possible. Additionally, it is planned to come up with a two-sided release schedule: there will be a release every six months, but there will also be long time rhythm for larger aims and features.”