IGN
In case you haven't heard, there's going to be at least one more Transformers movie from director Michael Bay. No big surprise there. One thing that is a little surprising about Bay's fourth outing is that he'll be focusing less on the human characters and more on the Transformers themselves. That's not necessarily a bad thing, but given how many Autobots and Decepticons have fallen in battle so far, the time has come to bring some new players onto the field.
I'm all for seeing the Dinobots and Unicron in the next movie but given the size of Unicron, he'd have to be across a multiple movie arc I think.
nice list, like to see insecticons or dinobots on the next one