Only the trial version.
It is not for the xbox yet and it will not be free.
Free Minecraft Is A Demo Version Of Minecraft And Its Not Premium
No. minecraft is never free unless hacked
It is free at the xbox live arcade
Yes it is called Minecraft Xbox One Edition.
There is only one version of Minecraft for the Xbox 360.
Only the trial version.
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
No.
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.
To move your games from one console to another you need to transfer your licenses and your account. Microsoft released a tool to do this, it's free and downloadable from xbox.com, and it lets you move the licenses from the console they were purchased on, to another. Once you've done this, Minecraft can then be played on the other console.