In the film he has two eyes yet in the 3d rendering he has a visor on....does he have some sort of battle mask?
I found this odd too. In the film I didn't really see it with. But then again we didn't get a very clear look at him considering he was mostly in the background
In the grand scheme of things, it doesnt matter as they can do whatever they want in the sequel since you see him for like a second max in Bumblebee. But to answer your question, I'm pretty sure they changed the design from the visor to having distinct eyes. If you look at the actual concept, the visor seems to be part of his face and not something that retracts. Not only that, they also ended up adding more colors to the final version than what the concept had.
I hope not, that wonderful smirk of his is just too great to be hidden. Also I’m kind of over the battle mask thing in modern Transformers as a whole.
And now comes the nervous waiting for whether a Studio Series retool of Blitzwing will use the head seen in the movie or the one seen in concept art...