Here's an interview I just did with our own Yawning Angel, a longtime Tor developer, about his work on a Linux prototype for a sandbox for the Tor Browser.
All of the Tor Browser Bundles have been updated with the new Firefox 17.0.7esr. There is also a new Tor 0.2.4.14-alpha release and all of the packages have been updated with that as well.
We've updated the stable and alpha Tor Browser Bundles with Firefox 17.0.4esr and Tor 0.2.4.11-alpha. These releases have numerous bug fixes and a new Torbutton as well.
We've updated all of the bundles with Firefox 17.0.3esr.
All of the stable Tor Browser Bundles have been updated with the latest Firefox 10.0.9esr release.
The Tor Browser Bundles have been updated with a bunch of new software: Tor 0.2.2.37, Vidalia 0.2.19, and we have switched to using Firefox's long-term stable release (10.0.5esr).
A user has discovered a severe security bug in Firefox related to websockets bypassing the SOCKS proxy DNS configuration.
The Tor Browser Bundles have all been updated to the latest Firefox 11.0 as well as a number of bugfixes.
The Tor Browser Bundles have been updated to Firefox 9.0.1. Originally they were updated to Firefox 9 and both changelogs are listed below.