The patch is already out.
Lol. Its came out at about March 2009.
Patch 3.2.2
its already out
There is no Battle Tank mount in World of Warcraft.
Patch 5.0.0 should be the next major content patch (right before Mists of Pandaria comes out) for World of Warcraft. There probably will not be a patch 4.4.
you can't
www.worldofwarcraft.com/patchnotes/3.2.0
Patch 3.1 will be coming out around 6th of April, as the game masters stated in a blue post that they would be adding alot of noble gardens achievements, and they probably won't be doing that in an individual patch.
It would seem that you need to have a full World of Warcraft license to purchase this mount.
Before 3.2
The dwarf have access to the Ram mount.
The 5.0.4 patch for World of Warcraft hit the live servers on Tuesday, August 28th, 2012.
This method is no longer possible. You must download the new installer from batlle.net to play World of Warcraft.
Voice chat was added in patch 2.3 with zul'aman.