Wasn’t it March 10th?
And I sure as heck wont migrate, the Microsoft Account requires stuff like Phone Numbers and other Information I dont want to give them. Not to mention people just get banned because “LOL, you need to buy Minecraft again, i guess”.
It is horribly set up and you get banned for being in certain countries, using certain VPNs and other things that make you look a teeny tiny bit like a spammer, even if you have a longstanding MS Account, you might get banned right after migrating Minecraft to it, which is absurdly suspicious.