Since players have to do it today, they should know how to do so. Here's a guide to the entire process. They also stated that if accounts don't migrate, they won't be able to play the game anymore: ...

Mojang Studios is now releasing the first Minecraft: Java Edition snapshot of 2022 with plenty of tweaks and bug fixes. The snapshot is minor, but lays the groundwork for the upcoming 1.18.2 patch ...