I did miss that. But if it's a full scale invasion with Scorponok and Megatron combining forces I'm a bit disappointed. I was hoping they'd show a bit more ingenuity and go with the unusual route of Megatron manipulating the humans. Drat.
I dunno, it seems though that we don't have many twists to expect. Which I think is really disappointing. That image and the Mosaic were badly timed imo and it makes me realy annoyed. There's no guessing game for me at all now; it's just an issue of "when". Does anyone else find that frustrating?
It's the equivalent of being spoilered about key plot points in a movie.