- Deferreds now support cancellation
- A new "endpoint" interface which can abstractly describe stream transport endpoints such as TCP and SSL
- inotify support for Linux, which allows monitoring of file system events.
- AMP supports transferring timestamps
For more information, see the NEWS file.
It's stable, backwards compatible, well tested and in every way an improvement. Download it the tarball, the Windows installer for Python 2.5 or the Windows installer for Python 2.6.
Update: We now have executable Windows installers for Python 2.5 and Python 2.6 to complement the MSIs.
Many thanks to Glyph Lefkowitz, who helped prepare the release, and the PyCon 2010 sprinters, who did so much of the work for this release.