All the information you needed / wanted to know in one place.
Release Date: Turn 10 is the developer, the publisher sets the release date based off of how well the game goes through the certification process and the game disks are pressed.
North American release date is 29-May-07.
European release date is 08-June-07.
Australian IGN is claiming a release date of 14-June-07 for their market.
Unconfirmed other region release date, I've seen different values for different countries ranging from 24-May-07 to 08-June-07.
Demo: The demo is now available as of 2AM PDT, 10-May-2007. Each regions Marketplace will be responsible for when the content shows up like all other Marketplace content, and the featured track will be Mugello Short. The cars you can use are:
1997 BMW Motorsport M3 E36
2003 Dodge SRT4
2005 Ford Mustang GT
2002 Honda Integra Type-R
2006 Lexus IS350
2004 Mazda RX-8 Mazdaspeed
2003 Nissan Fairlady Z
2005 Subaru Legacy B4 2.0 GT
2005 TVR Sagaris
2007 Porsche 911 Turbo (997)
2005 Mercedes SLR
2006 Chevrolet Corvette Z06
2005 Lamborghini Gallardo
2004 Ferrari F430
2003 Dodge Viper SRT10
2005 Ford Ford GT
2005 Maserati #35 Risi
1997 McLaren #43 Team BMW
2005 Ferrari #11 Larbre Compettition
2003 Pagani #17 Carsport america
1998 Porsche #26
2003 Saleen #2 Konrad M
1998 Nissan #32 Nissan r390
2006 Chevrolet #4 Corvette
Limited Edition: Limited Edition content will include three cars that will not be allowed to go on the auction house or to be gifted. WPR 45 confirms that the US will not be getting an LCE version.
Then, there's the lingering question of the Forza Motorsport 2 Limited Collector's Edition, which includes a soundtrack CD, a special making-of book (which yours truly contributed to), as well as nicer packaging and different cover art. On top of all that, the LCE comes with a code that allows you to download three exclusive cars available only to those who own the LCE. While the Forza 2 LCE has been confirmed for Asia and Europe, I'm sorry to say that it will not be coming to the U.S. Was it a Turn 10 studio decision? Of course not. When it comes to retail matters, there are many internal and external forces at work in the channel. Unfortunately, it was decided early on that the U.S. wouldn't get the Forza 2 LCE. Why? You'll just have to chalk it up to one of life's great mysteries, I guess. So the question is, just how badly do you want the three exclusive cars ('06 Ford Saleen Mustang S281 E, '03 Ferrari Challenge Stradale, '06 Subaru Impreza S204) and how far will you go to track down a LCE?
Please do not start new threads asking for this information, they will only be locked / deleted.