A non-pirated version of the trailer is online.
I said pretty much I wanted to say about this great trailer. I loved it, I’ve watched it like ten times. It intrigues even more than Batman v Superman: Dawn of Justice. And man, I still don’t like too much how the Joker looks like but Jared Leto is going to kill it.
For first comic-con debut impressions, read this.
For the trailer, stay here.