I'm happy to announce that today Python 3.1 was released. I won't dwell the new features, since those are more completely listed elsewhere. I'm quite happy with this release. A lot of work has been put into 3.x as stable as its older 2.x siblings. I would like to see a lot of libraries and applications start serious looking at the port to 3.x now. As always there's a bunch of core developers waiting to help on the python-porting mailing list.
Anyway, 3.1 is available for download in source and several binary formats on python.org.