Why Is The Ubuntu Hoary Beta Release A Milestone?

Mayank Sharma writes "As reported earlier on /., Ubuntu released the "beta" Live CD of their next version, Hoary Hedgehog. While, there have been several Ubuntu reviews after that, no one seems to have covered why the release was an important one. Here I review the CD and, based on a irc conversation with Jeff Waugh, try to explain why this CD is a milestone for the Ubuntu project."