I posted the latest edition of the Technometria Podcast yesterday. We talk about voting technology in the wake of the election and the announcement that Java was going open source. Matt has some interesting perspectives on what the GPL license would do to Sun's bottom line and why GPL was a strategic move.
It's interesting to note that Java wasn't open sourced--rather the name was. That is, Sun still retains copyright and trademark protection over the name and thus can control what is and what isn't Java. For now, they seem to be keeping pretty tight restrictions on the use of the name--if you take things away from the code base, you probably can't call the result "Java."