First, HD version of the gameplay. It includes new, HD quality motorbikes with it's own specifications. After starting the game you can choose, if you would like to stay in the HD version or go to the LP.
Second, new riders. In the HD version of the game you can find new sexy riders with the improved physics of body. (Boobs are moving very realistic) Riders are selected randomly, so each time you start the game you will get a new rider.
Third, version for Linux + SteamOS, so, from now everybody who use Linux OS can also play this game.
Forth, cached some small bugs and changed a little design of the track, really minor, but important changes.