The Energon Pub

[Gierling]

Talking about the lips/no lips thing.

http://www.autoblog.com

[Bilko90]

thats good news then

[First Gen]

Very simple answer: NO LIPS.

He (meaning Bay) wanted alien robots, he got em. Stay away from humanoid facial features.

[hubcapsignstop]

the prime shots definitely looked out of place (looked like crap), so im not surprized that someone else added them in/unfinished/whatever
But it is known that there are polished up scenes of prime talking with lips. etc.

the blogger makes a big jump in logic by assuming that since those particular scenes in the prime speaks trailer will not be in the film, that prime's lips wont either

im still waiting for confirmation