Retailers have started taking pre-orders for Madden 10 (cringing writing that) which has brought about the potential release date for the game being Tuesday August 11th. While this isn’t confirmed it does seem to be the likely. The second Tuesday in August has been the date for Madden 08 and 07. Prior to those it used to vary between the second or third week of the month. The game will be coming to the 360, PS3, Wii, PSP, DS and PS2.
Update: The game will be released on Friday August 14th