Yeah, lots of detail there... Guessing Yoda keeps, to himself, who he's communing with. Surprised to here where all he's going and it seems like the series wraps up a lot of things with him leading into ROTS.
It looks like there's a lot of people rallying with the Emperor to go against the Jedi. I kind of wondered about some of those species and where their loyalties ultimately lay.
I liked the appearance that they get back to a focus on the war... I really REALLY hated how the show had basically gotten away from the main conflict of the era, especially in the last couple seasons. It felt like after the Geonosis arc things really were focused on specific characters who seemed to have nothing to do with the overall war going on and that just was annoying to me. Now, they seem like they're going to try somewhat to get back to that, and tie it into how the whole thing began with Dyas and everything.
I saw Yakface on twitter retweeted a translation of the Aurabesh page on Sifo Dyas that's in the trailer. Pretty neat and something I would've totally been doing myself tonight.
It's interesting to see what he was up to though, and to see who the hell he was.