At this moment in time, it's still being called Transformers 4, but that will likely change before it hits the big screen on June 29th of 2014. Josh Duhamel, who co-starred in the first three films confirmed earlier today that he will not be returning. And his belief is that neither will Shia LaBeouf, Tyrese Gibson, nor John Turturro.
While none of the humans seem game in reprising their former characters, one thing is for certain: Optimus Prime and Bumble Bee have definitely been confirmed for their return in Transformers 4.
Transformers: Age of Extinction was released June 27th, 2014 and stars Nicola Peltz, Mark Wahlberg, John Goodman, T.J. Miller, Stanley Tucci, Kelsey Grammer, Sophia Myles, Jack Reynor. The film is directed by Michael Bay.