Mozilla plans to launch the following main ESR model of Firefox, Firefox 78, on June 30, 2020. A brand new main model upgrades Firefox’s Extended Support Release from an older model, on this case from Firefox ESR 68, to a brand new model.
Firefox ESR is up to date as incessantly as Firefox Stable however the core distinction is that Firefox ESR variations will not obtain all of the adjustments of Firefox Stable releases. These adjustments are pushed to Firefox ESR when a brand new main model is launched.
Current variations of Firefox are appropriate with Windows, Mac OS, and Linux. On Mac OS, Firefox is appropriate with Mac OS 10.9 to Mac OS 10.15 and users could set up any Firefox channel on these gadgets.
The launch of Firefox 78 and Firefox ESR 78 adjustments that. Mozilla plans to finish assist for Mac OS 10.9 to 10.11 (Mac OS X Mavericks, Yosemite, and El Capitan) subsequent 12 months; Firefox Stable installations on these programs will be migrated to Firefox ESR 78 when the brand new model is launched on June 30, 2020.
Why is that executed? Mozilla notes on Bugzilla:
We at the moment assist macOS variations 10.9 to 10.15. We’re transferring users on variations < 10.12 to the esr department with the discharge of Firefox 78, to each be in a position to assist them for a few 12 months longer, and scale back the burden from previous variations on engineering and QA for mainline Firefox.
A meta bug has been created on Bugzilla that tracks the migration course of. Mac OS X users of Firefox who nonetheless use these older variations of the Mac OS X working system will be in a position to use Firefox ESR for one more 12 months earlier than assist runs out. It is unclear if and the way different Firefox channel installations, e.g. Firefox Nightly or Beta, are affected by Mozilla’s determination to finish assist.
Firefox ESR 78 will not obtain new characteristic updates however will obtain bug fixes and safety updates. Mozilla’s Hardware dashboard provides no particulars on the quickly to be retired Mac OS X variations; these are possible filed beneath macOS Other and had a share of two.2% in February 2020. Note that the stat contains all Mac variations aside from Catalina, Mojave and High Sierra.
Google Chrome’s present system necessities on Mac require OS X Yosemite 10.10 or later.
I couldn’t discover precise Mac OS utilization figures however the determination will actually influence some Firefox users. Mozilla has not shut out users from putting in Firefox on unsupported programs previously however these do not obtain assist from the corporate and bugs particular to these programs will not be mounted both.
With Mozilla’s market share not trying that rosy, I might anticipate the corporate to retain users every time potential even when which means supporting older working system variations. The group has all of the figures at hand to make an informed determination however. (by way of Sören)