Transformers 4 Rumor: Familiar Characters Joining the Ensemble

JoBlo reported earlier today that a number of familiar names will be making their live-action (if you can call it that) debut in Michael Bay's upcoming Transformers 4. According to an anonymous source, the site is reporting that Grimlock and the other Dinobots will appear in the film, and that the deceased Megatron will be replaced by Galvatron. Here are the pertinent quotes:

"One of the villains of the film will be a character named Lockdown, who has a ship full of decommissioned Transformers, including the dinobots, which are somehow brought back to life by a captured Optimus Prime. Prime is joined by returning autobot Bumblebee and at one point both characters (and potentially others) will "ride" the Dinobots into battle in Hong Kong (which fits well within the announcement that the film would film partially in China), with Prime on Grimlock and Bumblebee on a Pterandon, presumably Swoop." "Additionally, the autobot Hound will make his debut, as well as a former "Samurai" Decepticon that wants to regain his honor and become an Autobot. And what about Megatron, who is presumed dead after the last film? Well, fans of TRANSFORMERS: THE MOVIE will be happy to know that not only will the dinobots be making their debut, but also Galvatron, who is basically Megatron 'reborn' (and originally voiced by the first Spock, Leonard Nimoy)."

Take this for the rumor that it is, though--and expect a denial fairly soon if it turns out not to be on the level. Back in December, a source claimed to have leaked a production script for the film, which also featured Galvatron and the Dinobots. That script turned out to be elaborate fan fiction, as Michael Bay revealed that no copies of the script had been completed and circulated yet at that point.