[quote name='botticus']Far as I know, Nintendo always dates their games.[/QUOTE]
nope... nintendo never street dates their games or accessories... just systems.
the only games to really have street dates are things like madden where they advertise a specific date, or games based on movies, where they plan for the game and the movie releases to coincide.
now, most of the stores won't sell games for new systems like this before the system's given street date, because they want people coming in to buy launch systems to have as wide of a game selection as possible. but it usually does happen at a few stores here and there, and with pre-orders.