Sonic Unleashed. They claim the game is launching with a huge production budget. The Sonic Team is developing it of course, but not just them. SEGA’s developer teams including those from Japan, the US and, apparently for the first time, even Europe. They want to prove Sonic could work in 3D environments.
[UPDATE: SONIC UNLEASHED Update Day (2) Big Budget Blockbuster, SONIC TEAM, More Art]