Tangential to windows 10 not being free, given its behavior over the past year essentially putting a gun to peoples’ heads to get them to upgrade, I will be downright flabbergasted if Microsoft doesn’t extend the free upgrades from earlier versions of windows indefinitely after June 29th.
My guess is there will be a bunch of furor early June about “free upgrades are going away, it’s now or never” to trick more people into upgrading and then on June 30th they’ll say “j/k, free upgrades forever”.