'Terminator 5' movie spoilers, cast: Aaron Williamson joins as younger T-800

"Terminator 5" is one of the most anticipated action movies that will be released next year. It could also be because Arnold Schwarzenegger made true to his promise that "I'll [he'll] be back."

Surrounding Schwarzenegger is a group of fresh cast members. Of course, Schwarzenegger is indeed the lead star. He will be reprising his role as the T-800 terminator. But this time, he is an aging terminator. The last time Schwarzenegger appeared in a "Terminator" movie was in "Terminator 3: Rise of the Machines."

The shooting for "Terminator 5" is almost finished, which means that there is more room for spoilers now. According to Movie Web, Schwarzenegger is almost done with all his scenes too.

So who comprises the new roster of the cast for the 5th movie of the "Terminator" franchise? Fitness trainer Aaron V. Williamson is set to go on board to play the younger T-800. Williamson announced it via his social networking page, but later deleted it.

The post read: "Thanks to an amazing team of people who help me get better each week, both physically & creatively, I'll be playing a T-800 (Terminator) in the upcoming production Terminator: Genesis. I'm extremely grateful & motivated as this new chapter begins to take shape."

Now, it's official. Movie Web reports that this is indeed true and Schwarzenegger also mentioned that there will be a younger T-800 in the new movie. Additionally, Douglas Smith and Emilia Clarke are part of the cast too. Smith is set to play the young John Connor, while Clarke is set to play his mother, Sarah Connor.

The other cast members who will be joining Schwarzenegger are Jason Clarke, Jai Courtney, Courtney B, Matt Smith, J.K. Simmons and Dayo Okeniyi. The movie is directed by Alan Taylor.

"Terminator 5" will be released on June 26, 2015 in the U.K. and July 1, 2015 in the U.S.