Tornado 2.0 introduces several potentially backwards-incompatible changes, including in particular automatic escaping of template output.
So it should be no surprise that the big news for this release is the improved compatability between Twisted and Tornado. Other improvements of note are:
- Updated and expanded WebSocket support
- Template errors now generate better stack traces
- Better exception handling in tornado.gen
- tornado.simple_httpclient disables SSLv2
Tornado requires Python 2.5, 2.6, 2.7, or 3.2, and is designed to run on most Unix-like platforms, though Linux and BSD (including Mac OS X) are preferred.
For a full list of features for Tornado 2.2, visit tornadoweb.org, or to download Tornado, check out the GitHub page.