[Fizzer]

Most likely a free-to-play Minecraft 2 that's loaded with microtransactions. Or retro-fitting microtransactions into the existing Minecraft.

[Navarr]

Oh please, next you'll be telling me they're charging users for "skin packs"

[Pyrodogg]

Not sure if serious, They have been selling skin packs on x360 since it launched.

http://minecraft.gamepedia.com/Skin#Skin_Packs

[jmcqk6]

They could probably do this pretty successfully following the tf2 model, where they bring in community contributions, but also pay the community contributors royalties.