The pre-order bonus for MLB 10: The Show was first discussed back in December and then updated with the latest last week. At select retailers those who pre-order the game will receive a code to download six classic stadiums for free. Those are Shibe Park, Forbes Field, Polo Grounds, Crosley Field, Sportsman’s Park, and Griffith Stadium.
Earlier today a new posting on the Playstation Blog went up with SCEA confirming the details that had been previously laid out. They also have included a screenshot of each stadium. Pre-orders from Gamestop, Amazon, Best Buy, Walmart, and Buy.com will receive the code.
Unfortunately the article did not address how the stadiums will be distributed to those who want them but pick up the game after it is released. Again this whole situation is only troubling because the stadiums have been advertised as being part of the game. They were included on the fact sheet and in previews with no mention that they would be restricted in some manner.
Update: Apparently the stadiums are on the disc and will unlock by getting all the trophies, which is unlikely to ever happen for most people. No word if they will be offering codes for purchase as an alternative way to get them.