I saw that too, but with other drives I only saw them wield certain keyblades (red had oathkeeper, yellow had oblivion, can't remember what blue had). Also, it mentions the drive here and apparently it's called Ultima (note that there are spoilers here:http://www.gamespot.com/pages/unions...&union_id=2650

Edit: I'm not sure if the info is official though, as while some of the stuff seems plausible, some of it may be false.