On November 6, 2014 Microsoft officially acquired Mojang:
It’s official, today we welcome Mojang to the Microsoft Studios family. We're excited for the possibilities ahead w/the Minecraft community.On November 12, 2014 Mojang registered a trademark for a product named “Blue Frontier”
— Phil Spencer (@XboxP3) November 6, 2014
I guess we will have to wait for the official announcement on just what this exactly means.