Google released version 1.5.1 of App Engine. They added some significant APIs and features, however, in my mind it’s missing a GO update.Tornado has been in version 1.2.1 for a long time… and the developers just release version 2.0. (download here) Looking at the release notes there are 3 major updates and several minor. Many of the minor updates are prerequisites. The most impressive will undoubtedly be support for python 3.2. However there may be some minor backward compatibility issues.