Well, I'm back after about a month of being away and I just read the whole news feed from the past month really fast and it is a lot of info to grab and hold in my mind but I do see the lack of Decepticons in the cast. Since Spoiler Shockwave has been confirmed as the main villain in the movie the story will probably go like this: He has been on Cybertron this whole time exterminating any remnant Autobots and rallying an army. When Megatron wants his help he will want to send his army to invade earth. Therefore, the Decepticons will be all CGI Cybertronian mode Decepticons. It would suck but maybe some could have names but they'll just be CGI the whole time. Does this make sense?