In Europe, gamers are getting downloadable vouchers for being early adoptors of a PSP go. In America, we're getting a Gran Turismo PSP Entetainment Pack (and a five-song Rock Band Unplugged for PSP go-ers). The Gran Turismo PSP Entertainment Pack is not a PSP go, but the existing PSP-3000 (in a "Mystic Silver" coloring) hardware bundled with a copy of Gran Turismo PSP at $199.99. The pack goes on sale on October 20.
The Gran Turismo PSP Entertainment Pack also includes a voucher to download the same car that's featured on the game's cover, the Chevrolet Corvette ZR1, a voucher to download a movie from the PlayStation Network (but you don't get to choose -- Sony's announcing which movie later), a 2GB Memory Stick PRO Duo and yet another voucher for 10 free songs from Sony Music Pass.