why glib/gtk 2.2 gnome 2.2?

[Jack Howarth]

    I'm confused...could someone explain why we have glib/   
gtk+ 2.2 in sid and are migrating to gnome 2.1? I thought
sid was frozen at gnome 2.0 until 2.2 was actually released.
Also now is a rather bad time to be doing this since it
confuses the gcc 3.2 transition. For example glib/gtk+ 2.2
isn't even part of gnome 2.1 release so we could be chasing
after bugs due to that. 
                         Jack