

99.0.)įortunately, as in the April 2022 Google Android update we just wrote about that happened to arrive on the same day, there were no critical security fixes and no zero-day holes patched. (Thus, 91.8 ESR has the feature set of Firefox 91.0, plus the same 8 sets of four-weekly security patches that came out in the intervening full releases, thus aligning it security-wise with version (91+8).0, i.e. The regular version of Firefox is now 99.0, while the Extended Support Release, which gets security fixes without any feature updates, is now 91.8.0 ESR.Īdd together the first two numbers in the ESR release triplet and you should get the same value as the first number in the regular release.


The once-every-four-weeks security update to Mozilla’s Firefox browser officially arrived today.
