A lot is happening in the Python world right now:
VIFF 0.4 was released two weeks ago. It has the usual number of bug fixes and introduces new asymmetric commands. This means that you can write MPC programs where only a subset of the players give or receive output.
Mercurial 1.0 has been released! I have been a happy Mercurial user for about a year now, and I must say that I’m very impressed with the speed and flexibility it offers. Subversion was simpler and cleaner than CVS, and Mercurial is even simpler, yet more powerfull. I strongly suggest that you consider using Mercurial for your next project, it is already used by large players like Mozilla and Solaris.
Twisted 8.0 is also freshly released. We are using Twisted in VIFF, and I have been very happy with it. The Twisted code has this nice property that when you read it you realize that there is no magic going on and that things are generally written the way you would expect them to be.