Minecraft came out in 2011 for the PC, Mac, Android, and iOS systems. It came out on Xbox Live in 2012 and on a disc for Xbox in 2013. When the Xbox One is released, Minecraft will be released for play on it.
Minecraft is available on Xbox. It is also released on Playstation on the 18th December 2013.
Yes it is called Minecraft Xbox One Edition.
It Already is
There is only one version of Minecraft for the Xbox 360.
Yes, it is. It was originally released in May 2012 for the 360 but has since then been released for the Xbox One as well as on various other consoles.
Minecraft is currently available on the 360 and there's going to be one on the Xbox One.
The Xbox 360 and the Xbox One
I haven't heard any word of that, but it is available on the Xbox 360, and will be an Xbox One exclusive when it is released.
No.
Not yet. It is going to be released in spring.
The PC version of Minecraft can be downloaded from Mojang's official Minecraft page. The XBOX 360 version of Minecraft can be downloaded from XBox Live Arcade.