Titans Class Devastator Confimred at Toyfair. Estimated to be about 18 inches.
Also Combiner Wars Technobots, Protectobots and Combaticons were confirmed as was a Combiner Wars Cyclonus remolded from Combiner Wars Silverbolt. Limbs are probably all going to be remolds of existing Combiner Wars limbs.
Don't forget about Leader class Ultra Magnus being confirmed!
According to info relayed from the Neuremberg toy fair, Streetwise, First Aid, and Rook from the Protectobots are all new molds. Rook is supposedly a six-wheeled SWAT-type armored carrier, and the description of Streetwise makes him sound an awful lot like mold mates with Lightspeed of the Technobots.
Venkata, the user over on TFW who provided a lot of advance info about Devastator and a couple of other figures, stated the other day that there's one more leader class toy yet to be revealed on top of the already-announced Megatron, Thundercracker, and (first leaked, then) just announced Magnus. Pretty excited to find out who it might be.