The latest Firefox update drops support for several recent macOS versions

Mozilla celebrated the Fourth of July with the release of Firefox 115.0, which includes a number of new features and security fixes. Of note is that this is the final version that supports macOS Mojave 10.14, macOS High Sierra 10.13, and macOS 10.12 Sierra. Users of those operating systems will update to the Extended Support Release (ESR) version of Firefox 115. ESR versions are basically maintenance releases; they get security updates and stability fixes, but Mozilla does not provide

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