I posted a little over a month ago about Tor Browser Launcher, a project I've been working on to make it easier for GNU/Linux users to securely download, install, keep updated, and launch TBB:
https://github.com/micahflee/torbrowser-launcher
I think it's about ready for a first release! I wrote a blog post all about it (including screenshots), where I ask for help testing it:
https://micahflee.com/2013/04/sudo-apt-get-install-torbrowser/
Please give me feedback, and post any bugs you find on the GitHub issue tracker.
Also, at Tom's suggestion I posted this ticket to get Tor Browser Launcher in deb.torproject.org: https://trac.torproject.org/projects/tor/ticket/8648
Can someone respond to get the ball rolling? Thanks!