Sources from Moviechronicles.com say:
A toy entitled ‘The Fallen’ has surfaced via Transformers in China, TF08. Its head matches the face seen on the Revenge of the Fallen poster and now confirms that ‘The Fallen’ is indeed a character, rather than a reference to a downed Megatron or Optimus Prime.
The third image shows a transformation sheet, with an alt mode that looks like a strange jet. The character himself looks spiky, evil and ancient.