Gran Turismo 5 is still a long ways off from being completed, having only recently finally received a Japanese release timeframe of March 2010. A “Special Edition” has surfaced on the French version of online retailer Amazon’s website, and is already available for pre-order.
Although the description does not say much, other than a same-site price-match guarantee, it has been priced and dated: €74.95 on March 31, 2010. This is far from a definitive release date, however, so take that posting with a grain (or mountain!) of salt.