The character model for Sonic still looks awful, but Jim Carrey is funny and I'm a Sonic fan, so I will still watch it.
Also, this trailer confirms some leaks. A leaker said that the movie is a prequel to the Sonic we know. The leaker said that Sonic was born on the planet Mobius, but was sent to live on Earth. The leaker said that the end of the movie, Robotnik loses to Sonic and gets sent drifting through space in one of his space ships. The leaker said there would be a post-credits scene with a fatter Robotnik with a larger mustache wearing his classic red suit waking up on Sonic's home planet Mobius after crashing in the Mushroom Hill Zone from Sonic & Knuckles. We see that post-credits scene in this trailer. So basically this movie is a set-up for a sequel with Sonic and his friends fighting Robotnik on Mobius. Sadly however, the movie will probably flop at the box office and the much better sounding sequel will probably never be made, all because they decided to do a prequel first and ruined Sonic's design.