Release Information

An official release date has not been set although a recent post (Posted: Dec. 12, 2011) on Mojang's blog stated that pre-orders are around the next bend.

Pre-Order Information

Also on the post (Posted: Dec. 12, 2011), Carl mentioned that the pre-order system along with the development process would work the same way as Minecraft's did (Mojang's previous game.)

Predetermined Process

Alpha

Hot seat multiplayer
Continued work on singleplayer/co-op main campaign
Introducing the level editor
Windows only

Beta

Fully functional level editor
Continued work on singleplayer/co-op main campaign
Introducing in-game level sharing
Introducing more editors
Windows, Mac OS X and Linux

Gold – Feature complete game includes:

All editors fully functional
In-game level sharing
Completed main campaign
Hot seat multiplayer