Additionally Linkin Park's Mike Shinoda and Chester Bennington have both dropped hints regarding their involvement.
Shinoda stated in this interview on YouTube that while they haven't produced a song exclusively for the film that doesn't mean they can't use one that's already complete.
In an interview posted at The Linkin Park Times Chester Bennington also hints about their involvement:
RY: Are you working on the soundtrack for Transformers: Dark of the Moon?
CB: I don’t know if I’m at liberty to tell you yet [winks]. But it looks promising. I think we go hand in hand with those films. A lot of our younger fans call us the Transformers band.
So there you have it. It appears there is a very high probability we will be hearing Linkin Park on the upcoming DOTM soundtrack. What do you think? Is "Burning in the Skies" a good choice?