Pretty important and something I have not seen discussed on the forum yet. They plan to cut off for both 7 and 8.1, which (of course) affects Win8, convenient they can't class this as a separate OS, just a repeated of Vista situation from years ago.
Are there any plans to track and archive the current source code tree and build requirements for a successful Win7 Chromium build before it eventually becomes lost in time, like it did for Chrome 49/50? It'd be nice to be able to have merely so that a community fork or such can quite possibly be envisioned and ensured 'future-proof' and the same mistake is not made again, especially with the current Internet browser climate and abusive mannerism of modern web developers.
Firefox is not feasible IMO, as a longtime ex-user from the 3.x days that jumped the gun after Quantum turned it into an identical copy of Chrome (the signs were there long before, ever since 4.x), I don't think it will last the test of time with Mozilla's constant anti-user decisions (esp. what they did to the SeaMonkey guys wtf?!) and pandering to the woke Twitter terrorists in their PR.