This article is a few days old so I don't know if this has been posted about. If so, please remove this thread. I found an article about mark Wahlberg being interviewed. he says “Recruiting the dinobots — it’s pretty elaborate in how it happens,” he offered as a hint. “[It’s] not like Optimus has a whistle and they come running, he’s really got to convince them to come onboard and fight this fight, and it’s pretty cool how it’s done. I think people are definitely going to get their money’s worth, it’s well worth the wait. And I think, for the die-hard fans, they’re going to have a whole new thing to look forward to in the future.” this sounds really familiar, im pretty sure he said this a while ago but basically my point is that with what we have seen so far it seems like the dinobots will get a fair amount of screen time. maybe just Grimlock but I think this gurantees that Grimlock will have some discussion with optimus in robot mode.