A 20th anniversary bash is happened this weekend in Japan for Sega's Sonic the Hedgehog. Tokyo's Odaiba (I love that place!) hosted Sega VIPs and fans to celebrate Sonic's birthday, and it was there that a new iPhone app was announced. They even had a Sonic cake! The app is expected to hit the App Store on the 23rd for free.
Impress Watch managed to snag a shot of the new app at the event, as you'll see above. Andriasang says that by playing this "Sonic the Sketch Hog," you'll be able to unlock information, wallpapers and more. We'll get a better look at this title in a couple of days.