The countdown has completed and the first single from Transformers: Revenge of the Fallen Soundtrack is now officially released and available on iTunes. You can listen to the single here. I am not sure when the music video will be up nor when the song will be available on iTunes. Thanks to Darin and Austin for the info.
Update 2: The lyrics to the song is up on Mike Shinoda's blog here.
Update: Sadly the Youtube "video" has been pulled.