https://www.reddit.com/r/firefox/comments/1de7bu1/comment/l8gcjth/:
We’re planning to extend support for Windows 7 users past the currently planned date and give them better options for migrating to a new PC when they choose to.
This is very surprising to say the least. Does this extended support include 8 and 8.1?
It does include 8 and 8.1, I should have said that earlier.