Just two example mobs of what is to come -- me on a horse, and the new dragon that will replace our current red guys. Even after the patch, don't expect to see everything at once. It will take a while for us to utilize all the new animations and items being added to the game. We haven't even touched the surface of the last patch's goodies yet!
All the horses will be new, as will most of the dragons, and a stable of new rideables will find their way into the Pines.