minecraft 1.3.1 has already been released worldwide on August 1, 2012. A second update to it, which is also the current version of the game at the time of this answer, 1.3.2, was released 15 days after 1.3.1 on August 16, 2012. It only fixed a couple of bugs, and made sideways logs naturally generate in large trees.
No, Minecraft is a program.
Soon.
Minecraft was originally released to the public in 2009.
It won't, next is minecraft 2.0.
Minecraft Alpha came out in 2009.
If you are referring to Minecraft: Pocket Edition, it is unknown.
Yes, Multiplayer comes with Minecraft on the PC.
It will never come out for Wii.
27$ in America
In Minecraft PE the horses will come soon since the pocket edition will soon get that update.
There are no plans to release a 3DS version of Minecraft.
There's no current release date for Minecraft 1.6