Please be advised the following are potential spoilers.
A piece of info has been dropped stating some Transformer characters may not be making a return to the big screen for the fourth live action film. "Nelson" of the Shoot For The Edit - Michael Bay forums
has been known to drop hints before and seems to have stated Sideswipe and Dino won't be returning for Age of Extinction.
This is consistent of course with their cars not being seen on the set as well as the promises of a new robot cast for Transformers 4 as we've previously been told.
Are you okay with this possibility? You can see the original thread with Nelson's reply here.
Discuss after the jump.