Firefox 5 Slips Out Ahead of Schedule, Gets Official June 21st

Mozilla promised a faster refresh cycle for its wily web browser, following the release of Firefox 4, and it's made good on that promise. The latest incarnation brings with it support for CSS animation and a more easily accessible do-not-track setting -- now available at the top of the privacy pane -- but won't see much in the way of GUI enhancements. Of course, if you want to play it safe, and avoid any last-minute tweaks, you can always hold off until version 5 gets official, but what's the fun in that?