The site features many screenshots, 3 interesting movies of gameplay features in this amazing looking game and much information, including the names of each of the race courses and profiles for each of the 4 main characters; Sonic the hedgehog, Shadow the hedgehog, Silver the hedgehog and Knuckles the echidna.
According to the site, the names of the 6 race courses or “Zones” as the site refers to them as (Perhaps a nod to the earlier 2D games in the series and Sonic heroes) are Zone 1 – Forest falls, Zone 2 – Colosseum highway, Zone 3 – Sky park, Zone 4 – Crystal mountain, Zone 5 – Death yard and Zone 6 – Meteor base. 4 bosses of 4 of the zones have also been revealed.
The Egg turtle will be the boss of Forest falls zone, Egg falcon shall be the boss of colosseum highway zone, the Egg lynx will be the boss of crystal mountain zone and the Egg kong is presumed to be the boss of death yard zone. Each have been created by the evil villain Dr Eggman and not only does the player have to land the finishing blow on the contraption to win, he also has to stave off his rivals in order to accomplish this! For all of your characters rivals shall be present and trying to defeat Dr Eggman himself.
Many thanks to Sonic1985 of the SSMB forums for the tip off!