Appologies if this belongs in the Spoiler section...if so, please move it.
AICN has another image that could be the ROTS teaser.
(There are no spoilers in the image, for the fellow spoiler-free)
If this is indeed the real thing, I like it. It's a nice echo to the Episode I teaser.
If is isn't real, then it's no surprise. The only thing that leads me to think that it could be fake is because it's an image we've seen before (for the most part), which I don't recall happening for Episodes I and II.