Damn it, I drink Rockstar every single day and I have yet to see one of these cans anywhere. I also plan on getting the Mad Max game. I'm the target audience and I can't even participate!
Just got back from the FB in Warwick, RI and can confirm they have a literal wheelbarrow full of both PS3 and 360 copies of Rising in the front of the store. Also saw GT5, Virtua Tennis 4 (Wii), and a handful of shovelware Wii and DS titles.
Really looking forward to the South Park game. I'm hoping it's very self referential to its older content and not too reliant on the more recent seasons.