updated 03:20 pm EDT, Tue April 24, 2012
Firefox 12 final ready to go
Mozilla has posted the finished release of Firefox 12. The browser has a key update each for Mac and Windows users. Windows' update is most conspicuous and doesn't need the user to confirm the update in a User Account Control prompt on Vista or 7. Mac users see a lift, as Mozilla has fixed slow WebGL graphics performance on some hardware.
Other changes are minor and include line numbers in page source to help track down bugs, better in-page searching, and the ability to download a file just by pasting its web address into the download manager. Developers can now try CSS formatting's text-align-last feature and get rudimentary support for ECMASCript 6's Map and Set objects.
As with most Firefox releases, it should be available for Linux, Mac, and Windows users at the same time, either within the app or as a manual download. Mozilla is keeping to its fast-track update schedule and could have Firefox 13 ready within several weeks.