Sega has slipped us seventy screen shots of Sonic Chronicles: The Dark Brotherhood, but has still managed to avoid spoiling anything about the game.
Amongst the batch is a series of shots taken from the same combat sequence. If you click on the next button really quickly, you can see how combat will play out, if the combat had a frame rate of about two frames per second.
It seems a lot like a Final Fantasy game. Except with rings appearing after an attack, which you have to tap with the stylus in order to get a bonus.
Also shown is a menu screen elaborating on an attack called Halestorm. This is all speculative, but considering it lists a specific team line-up below the description, we bet you need those characters in your party in order to pull it off.
Aside from that, it all looks like business-as-usual in the world of BioWare Sonic.