Sonic Chronicles: The Dark Brotherhood

Straight from the good guys at NeoGAF comes information about Sonic Chronicles: The Dark Brotherhood

With Bioware on board as the main developer, I can't help but feel excited. Granted, a turn-by-turn Sonic game is bound to raise a few eyebrows, but Bioware knows how to make RPGs. I'm confident this one will be yet another stellar game from the reputable studio.

• Cover story with nice artwork
• In-game graphics have a water color look, all hand drawn
• Four party members at a time
• Each character has special skills: Tails, for example, can float over things
• Eleven party members total: The seven known are Sonic, Tails, Amy, Knuckles, Rouge, Shadow, Big the Cat
• Controlling the game is done fully with the stylus
• You will be able to split your party into teams at certain moments
• Rings are used as currency
• No random battles, you can see all enemies on the field
• Turn-based battles, choose commands for everyone in your party before they actually follow through
• 'Elite Beat Agents'-style special attacks
• Team attacks (similar to Chrono Trigger)
• 'Fatigue Points' instead of MP
• You can choose which attributes to increase when a character levels up
• You can purchase and level special attacks
• Two acts: The first takes place in standard Sonic areas, the second takes place in a darker world
• Remixed classic tunes
• Fully animated cut scenes
• simple dialogue trees
• Side quests

A bit of the story was also unveiled:

Sonic is on vacation from defeating Eggman 2 years ago. He gets a call from Tails that Knuckles has been kidnapped by a group called the Marauders, and that 6 chaos emeralds are missing. Eggman will not the main villain. Bioware wants to make him a creditable bad guy again. Something was also said about a 'twist' between Eggman and Sonic that goes back to the earlier games.

Source