Tom and Emily,
Looks like someone in Asia was listening to our prayers about dragons fighting tanks. I have no idea what is going on in this trailer but it looks like they just CGI-ed out the all the crappy Transformers and CGI-ed all sorts of awesome dragons to replace them.
They also added knights riding dragons, dragons firing missiles, most of LA blowing up, Robert Forster and what looks to be the guy who hosted While You Were Out and was the opening act for Britney Spears. And then more dragons. And in another trailer on Youtube, there was a dragon eating an elephant. And that guy from the Office. So fucking awesome.