J5 has had the great idea of proposing a GNOME Foundation-sponsored hackfest to bring needed pushes to Python 3 and GObject Introspection support to PyGObject.
The situation in which we are today is not very comfortable, as more and more people are wanting to move their projects to Python 3.x and the old static bindings are not being able to cope with new API added to existing libraries and with new GObject-based libraries. A lot of people out there are known to be using PyGTK in long-term projects, so we really need to get our act together.
AFAICS, the plan on the table right now is to make PyGObject and PyGI run on Python 3.x and drop the static bindings, instead of having to port all of them to Python 3.x. Another possibility is to drop PyGObject altogether and have standalone python bindings for GObject Introspection, but that would reimplement lots of stuff already in PyGObject.
Have started a thread in the PyGTK mailing list: http://www.daa.com.au/pipermail/pygtk/2010-February/018222.html
Please pass this idea to whoever you think could be interested, more details will come soon.
UPDATE: have started a proposal in the GNOME wiki: http://live.gnome.org/Hackfests/Python2010. Once we have a better idea of who is interested in attending, I will complete it further.