Huh - well there ya go, I learned somethingI knew that WFC/FOC and Prime were all part of the Aligned continuity, along with the books (don't bother to read Exodus unless you really want to - its not great) but the earth Grimlock and Optimus looked very AoE to me so I assumed that's what it was. Ah well, that makes more sense and now I know better
Edit: Sorry to harp but are you guys really sure it's Prime and not AoE? I just watched the trailer again and it really seems like Optimus has his AoE body and alt-mode rather than the ones he had in Prime. Likewise with Grimlock.
Even TFW2005 is saying it's where the movie and FOC worlds meet:
Via IGN we can share with you the announcement trailer for the new Activision Transformers game, Transformers: Rise of the Dark Spark - a game which sees the Movie universe and the Fall of Cybertron universe collide!