Do we know any official spoilers for "Transformers 5," the follow-up to last year's "Transformers: Age of Extinction?" Probably not. We don't even know the official name yet ("Transformers 5" is almost definitely a placeholder, considering every previous "Transformers" sequel has used a subtitle in place of a number).

But we do know several things about the film's cast, and we may even know some spoilers regarding the plot- where Optimus Prime and his band of transforming space robots will be headed in the next sequel. According to Ecumenical News, there are three main plot points that might figure into the next "Transformers" film. First is the mysterious beings that created the Autobots. Hinted at at the end of "Age of Extinction," it's extremely possible that Optimus Prime will travel through space to find those who created him in the next film.

As well, there's the continued adventures of two major elements from "Age of Extinction"- the villain Galvatron, and the heroic Dinobots. Neither found themselves at the end of their story in the fourth film, so the fifth may see them alive, well, and punching each other in the face repeatedly.

As well, Air Herald reports that Optimus Prime has received a major upgrade in the latest line of "Transformers" toys. That may well affect the next film, as the "Transformers" film franchise and toy line are very closely related.

And we know a few things about the film's cast. For one, Mark Wahlberg is officially on board to shoot the "Transformers" sequel. Realty Today reports that while he's not sure when the next "Transformers" movie will film, he's officially a part of it.

"Yeah, I committed to doing a couple more," Wahlberg stated recently. "I can't speak for Mr. Bay, but something tells me we'll be on the set soon."

Megan Fox may also be returning, per the latest rumors. And one thing's for sure: the "Transformers" franchise is way too huge to ever stop (the last film cleared over a billion dollars worldwide), so we'll be seeing Optimus Prime again at some point.