I just saw that the TYPO3 guys released a new version of the popular Enterprise CMS (www.typo3.org). The changelog shows that they mainly changed some security issues and that a lot of smaller changes in the backend happend - one change relates to the problems in the new Firefox 3 where all the frames in the backend are mixed up for some compatibility reason… this was also the reason why the also updates the 4.0.x branch and the 4.1.x branch …
TYPO3 source package downloads / TYPO3 upgrading guide