There's close up pics of the head on seibertron.com and TFW. It sort of looks like a younger face to me for some reason. And he's got a bit of a grimace. I get a bit of an optimal optimus vibe too.
Big gallery of photos of the Voyager class Optimus toy.
I've just had a look, and it does look quite like Primal, maybe from the raised nose and mouth makes the face gorilla-like. He does look younger too, perhaps its because we're used to seeing that face on Animated Prime (albeit, more aggressive looking). Not sure how that will work with Peter Cullen's seasoned voice.
変われ! ヘッドマスター! Kaware! Headmaster!
戦え! ヘッドマスター! Tatakae! Headmaster!
Will definately pick up Smokescreen but like others hope the armour is separate
Some of the 'beast' figures look interesting as well
I really, REALLY like Beast Hunters Optimus. Big, chunky, armed to the teeth. And if Takara does a version with clear blue plastic I'll buy that too.
A gallery of the case-mate voyager Predaking.