Wow! So now you can design your game for the Xbox 360 controller right up front. Additionally, you might actually be able to start getting away with producing a PC game that relies on a gamepad since there's going to be millions of 360 controllers out there. It might not end up being as great as it's potential suggests but it's probably the best attempt yet to get a nice unified multiplatform controller design.
http://www.gamasutra.com/php-bin/news_index.php?story=6892
http://www.gamasutra.com/php-bin/news_index.php?story=6892