What could this one be? Voyager, perhaps? The only Voyager Prime I remember seeing listed was 'Evasion mode' Optimus Prime, and this doesn't look particularly evasion-y, and I still think that one is the rusted cab. Wasn't there a Voyager Optimus/Grimlock two pack listed too? Hmm...
It looks okay, better than the Leader, but that backpack is massive. Oh well, hard to expect much better from such a clearly impossible design with barely any alt mode bits.
Looks like this toy has a faceplate-less head, the face looks the same as before, which I'm happy with, I like Movie Prime's face, and it needs to be recognizable as the same version of the character.
If this is the Voyager, looks like we really are getting a TF1 situation here. Voyager has a big backpack, but otherwise looks better than the Leader, but neither capture the design too well... maybe we'll get an amazing TF5 version.