Thanks to the internet, you can watch the new Transformers: Revenge of the Fallen before it shows with Wolverine (or Transformers tomorrow for some). Watch it while you can as I doubt it will stay up long. The good news, the trailer does use some footage from the ShoWest Montage, but most of it is brand new stuff we haven't seen before.
The bootleg version was pulled from Vimeo. Since the HD version is debuting in a few hours, not going to look for a replacemet but another link to the trailer is also here or to download go here.
Update: YouTube video pulled so replaced with Vimeo link from the comments.
Update 2: Vimeo pulled video, changed above paragraph to reflect the removal.