Today we got a look at what Sonic's moves will be.
> B: Spin Dash
Like this wasn't obvious enough. You can also jump while doing this to go into the air for extra damage.
v B: Spin Charge
This is more like the original Sonic spin dash from his games. You charge it up, and then release to dart to the other side. Plain and simple.
^ B: Spring Jump
And here we thought he'd use the Homing Attack or something for this. Nope, a spring appears and springs Sonic upwards way high. Be careful when you use it on the ground...

...because then other people can also use it to get to you.

