Sonic Boom: Shattered Crystal Trailer

Sadly bereft of Dr Robotnik Eggman, this trailer does show us what the various playable characters will be up to.

Following a storyline spinning out of Rise of Lyric, Shattered Crystal sees Lyric kidnapping Amy. So Sonic, Tails, Knuckles and newcomer Sticks head off to rescue her. Sonic will run, Tails will fly, Sticks will... use her boomerang to hit switches in awkward-to-boomerang places... and Knuckles will grind?

It also seems to feature some 3D scenes like in the Sonic Rush series, which again was 2.5D for the most part.

It comes out in November for 3DS.