Pluggable transports bundles 2.4.17-beta-2-pt3 with Firefox 17.0.9esr
There are new Pluggable Transports Tor Browser Bundles with Firefox 17.0.9esr. They are made from the Tor Browser Bundle release of September 20 and contain important security fixes.
The bundles contain flash proxy and obfsproxy configured to run by default. If you want to use flash proxy, you will have to take the extra steps listed in the flash proxy howto.
These bundles contain the same hardcoded obfs2 bridge addresses as the previous bundles which may work for some jurisdictions but you are strongly advised to get new bridge addresses from BridgeDB.
In China, last I checked, they DPI for obfs2 connections, do active folllow-up probes, confirm that they're obfs2 bridges, and block them.
And they don't do that to obfs3 (currently).