I got the very last copy of the current-gen XBox version at my local Gamestop.
Guy said they had plenty of the other systems in stock, including 360 and PS2, but the XBox ones were just flying off the shelf.
And right as I was taking my purchase out, a guy came in and asked for the current-gen XBox version and the clerk said, "Sorry, I *just* sold the last one."
The crest-fallen look on the guy's face was hilarious in that Schadenfreude kinda way.