Thanks to the tireless efforts of Krzysztof Klimonda we now have a team in Launchpad for gtkmm folks.
https://launchpad.net/~gnomemm
If you’re interested in helping maintain the gtkmm stack in Ubuntu then please join this team. We could really use a hand as keeping finding people to help with this stack on a regular basis has been a problem for us.
While setting up the team Krzysztof also updated atkmm and gtkmm in Natty to the latest versions so you’ve got that to play with!