We’re looking for technical people to come help us test next-gen onion services. They’ve been fully merged into tor-0.3.2.1-alpha, and the latest version of Tor Browser supports them. We're still in the testing phase, though -- keep an eye on this blog for the official launch.
A company in China has produced its own distribution of linux, called Red Flag Linux.
This is a testing release of Tor IM Browser Bundle 1.2.1-dev. The only fix in this release so far is an updated prefs.js to fix plugin scanning.