He appeared in shadow in the season premier, and he's confirmed to appear as a combiner. I'm hoping he will be someone akin to RID2001 Scourge, who was a great character and a great evil clone of Optimus. I hope he gets into a game of chicken with Optimus, as in G1.
He seems like a cool villain. "Control the roads, control the world." More excited for the inevitable Ultra Bee Vs. Menasor.