Watch Dogs might not be out yet, but that sort of thing never stops Minecraft players. Minecraft players will recreate everything, remember?
Including, yes, trailers. This recreation of the dramatic reveal of Watch Dogs comes from Sky Does Minecraft, and it's pretty good:
The original trailer, for comparison's sake:
And now to wait for the game's release, and the subsequent full recreations of the game in Minecraft. It's a matter of time, people.