Being second in command to Optimus Prime, Ultra Magnus is the one who usually takes the reign when Optimus Prime isn’t around. With Optimus Prime heading out to space to confront the Quintessons, the film will see Ultra Magnus sharing a lot of screen space.
Transformers is one of the most successful franchise of Paramount Pictures and given the kind of popularity that they enjoy with the fans all over the world, the studio is planning on expanding the universe. There are plans of a cross-over with G.I Joe. This news has not been officially confirmed.
Paramount Pictures is planning spin-offs with some of the popular characters. One particular spin-off that is already plan is an animated film that will show the clash between Optimus Prime and Megatron.
Rumors suggest that Transformers 5 will see Dwayne Johnson and Bruce Willis. There are no confirmation about whether they will be voice actors or humans. If the two are a part of the film then it will be a reunion for Wahlberg, Johnson and Willis, who had last shared screen space together in Pain and Gain.