Dinobots and Constructicons may have small cameos in the upcoming movie and the film's producer has confirmed he has already conceived a way to present both groups in a sequel.
If you go to the Sector 7 web site, found at
www.sectorseven.org, and enter the code "codeblack," you'll get to see the following sequence (click on the red hard drive, choose the N.B.E. 08 file):
The short sequence shows Dinobots leader Grimlock in his T-Rex form, crushing everything on his path. The excavator on the left could be Scavenger, from the Constructicons.
As if that wasn't enough, UGO's Back Row Chatter caught Tom DeSanto, who confirmed the two groups' appearance in a potential sequel:
“It is really gratifying that as an old school Transformers fan and after almost six years of work the movie is just over a month away from live action big screen immortality. Like X-Men and Battlestar Galactica this is a project I have wanted to see made since I was a kid. As a huge Grimlock lover myself there was just no room in the first movie for the Dinobots, we had to focus on the original Transformers with Optimus Prime and Megatron. But if the box office allows us to make a sequel, the door is open to a lot of the Transformers universe. I have a very cool idea on how to intro the Dinobots and Constructicons. How cool would that movie be?”