The official Japanese site for Sonic and the Black Knight has updated with a trailer from the Tokyo Game Show 2008 showing some actual movement from the game. You remember the screenshots from Nintendo Power? They’re back, in video form! The official site also has the main theme playing over the video, so you should go take a listen and watch it.
Here’s the video from YouTube, but it doesn’t have the lyrics of the main theme. Just an instrumental version. Hit up the main link for a higher quality, lyrical version of the movie.