I read Google's blog post saying that Google Chrome will be continually supported on Windows 7 until July 2021. Would the MediaWiki support Chrome's final version for Windows 7 when Chrome's next version for other OSes comes out?
Support for Google Chrome on Windows 7
See Compatibility#Browser support matrix . OS is irrelevant.
What does "current and previous version[s]" mean? The last two versions, or all versions? Or does it mean the listed browsers supported for grade-A matrix?
To me, "version" is singular so it does not mean "all". But asking on that page itself might make more sense.
This answer concerns me still. Can Wikipedia still work well, even after Google will end support for Chrome on Windows 7?
@George Ho: This has been already answered in https://www.mediawiki.org/w/index.php?title=Topic:Vf012bxcgtw630y9&topic_showPostId=vf06zy5r2u8p9ads#flow-post-vf06zy5r2u8p9ads and https://www.mediawiki.org/w/index.php?title=Topic:Vf012bxcgtw630y9&topic_showPostId=vf0ii33146g664ve#flow-post-vf0ii33146g664ve. It says: ""Grade X" is probable, untested JS functionality, which is unsupported."