I tried and tried all day today to watch the Clockwork Prince trailer on the Entertainment Weekly website but for some reason it never worked. I finally found the trailer on Youtube and am now even more excited for the book to be released on the 8th of December! The trailer is very impressive because as far as book trailers usually go, they're campy and cliche and usually don't tell you much about the actual book. Of course I should have expected that this series would get the royal treatment. The atmosphere is great and the scenes actually make you anticipate reading them in the book.
Anyway, for those having the same issue as me - here is the official trailer! Enjoy :)