Seriously, we can't caveat this one enough -- there is no way of knowing if this is in fact the Galaxy S III or, if it is, when it might come to market -- but, it looks like Samsung's "next big smartphone" just made a cameo on the company's support pages. Listed as the GT-i9300, the mystery device reared its head over at the Global Download Center of the United Arab Emerites site. If Sammy is to keep with its naming scheme i93XX would be a flagship device -- the i90XX line was the Galaxy S, i91XX represents the S2 series, while the i9250 and i9220 are the Nexus and Note respectively. As we warned before though, this could be some mid-range device and Samsung could be changing its naming conventions. Or, perhaps, its yet another variation of an existing model. Still, we'll take this as a good sign that Seoul squad has something interesting brewing.