Are we supposed to believe that Rockstar wouldn't include the GTA logo on one of their boxes? C'mon.
I didn't say it's legit

The name was registered and we all know that if it will be anything it will be a collection of the PSP games, the only thing that we don't know is the platform, but the only platforms where PSP games are re-released are only IOS and Vita(+ PS3 eventually) imo, if instead we count them as PS2 games then PS3 could be slightly more probable than Vita.
EDIT:
Top of the page recommendation for 50ppp bros:
Don't forget to make TOTP recommendations!