Okay, sorry folks. this appears to be not from an official source. It does look almost exactly like the movie toy without the extras - but we and other sites appear to have been punk'd,,,so far.
I'm home sick today. I'll just blame that.
Via the movie's Facebook page, here's how Optimus will look in Transformers 4: Age of Extinction. As we might have guessed, he looks like the toy minus the shellformer on its back.
And no boobie windows. Dammit. Think that's why the dude attacked Michael Bay with an air conditioner?