Windows XP users are advised to update to the latest service pack, and Windows 2000 users should consider upgrading ahead of the June release of Firefox 13.
We never change minimum requirements lightly, but this support change allows us to significantly improve Firefox performance on Windows by using a more modern build system. Wed also like to take this opportunity to announce that our minimum supported Windows version will change from Windows 2000 to Windows XP SP2 in Firefox 13. Enterprises and organizations should complete qualification and deployment of the ESR over the next month. In support of Firefox 3.6 users in organizations, weve delivered on our promise to implement the Extended Support Release plan three months ahead of ending support for Firefox 3.6. We strongly advise our users to upgrade from Firefox 3.6, as they will no longer receive critical security updates as of April 24th. Barring any major stability or security issues found over the next few weeks, Firefox 3.6.28 will be our last 3.6 release. In the years since Firefox 3.6, weve make incredible improvements to Firefox, including phenomenal HTML5 capabilities, Firefox Sync, faster java script performance, support for the Do Not Track header, and an easier, quieter update process. "After two years of regular updates, well end our support for Firefox 3.6 on April 24th. This mostly eliminates anyone silly enough not to be updated to the latest XP service packs and Windows 2000 users. Firefox 3.6 is here Firefox 3.6 has some cool consumer facing features like Personas and a better Plug-in Updater, but developers have a lot to be excited about too. They are also reducing support in the 13x versions to Windows XP Service Pack 2 minimum. In other words, this is a good time to upgrade your old Firefox to a newer version. We know a lot of people who prefer the older versions before Firefox got a little bloated but if you are using 3.6 this would mean that they will not be updating it and new security holes will be a possibility. Alex Keybl has made a post to announce the end of support for the Firefox web browser 3.6 as of April 24th.