ニュース

Once that process is complete, your Mojang account will no longer be used to play Minecraft Java, and Mojang is giving everyone who makes the move a free in-game cape.
Mojang's original version of Minecraft, which millions play, will now require a Microsoft to play for security's sake, Microsoft says.
This Fall, new Minecraft Java players will need to create a Microsoft account to log-in. Meanwhile, existing Mojang accounts will need to migrate in early 2021.
Microsoft’s free Minecraft for Windows 10 giveaway ends at midnight for Java players Legacy Minecraft: Java Edition players can still snag free codes to the Windows 10 Edition until midnight.
To enhance security and safety, Mojang, the makers of MineCraft, will require players to have a Microsoft account starting in early 2021.