The Firefox team has decided to stop supporting Firefox 3.5. They've put a great deal of thought into how they will handle the ~12 million Firefox 3.5 installations around the world. Firefox 3.5 will be updated to the latest 3.6 version, through the auto-update system — which really makes it an auto-upgrade. The plan is to start pushing the upgrade on June 21st, in conjunction with the release of the new Firefox 5. The team has shared their assumptions and rationale for the decision in a Firefox 3.5 EOL article on the
Mozilla wiki.
The decision to upgrade users' soon to be outdated and unsupported browsers is important. Home users' computers are under constant attack. The stream of software updates is both endless and rapid, especially when taking into account that there are updates to the operating system, web browsers, and commonly installed software such as Adobe Acrobat and the Java Runtime. The average user should be relieved from having to deal with all the different update notifications and procedures. Apple have been leading the way here for many years already. If you do a Google search for
"security update" flash you'll see why: They've been supplying updates to the Flash player for many years through their update system. The Chrome team chose the same route in April when they
included an updated version of Adobe Flash with their latest Chrome release — fixing a vulnerability in the Flash plugin in addition to three in Chrome. The simpler the job for users to keep their systems up-to-date, the more users will be running the latest, greatest, and safest software.