The teaser shows so little of his face, I'm sure they could wip something quick up just for the sake of a blurred teaser shot while the money portrait is finished up. Could also be they started him, got access to better reference and instead of screwing us, opted to just fix it now before even showing him off. I can't imagine they saw his look anytime before the U.S. theatrical release, seems fast to already have him ready for unveiling. Clothes could be done for the most part, it's just a grey suit, but the portrait sculpt and paint should take more than a few months. Maybe HT did receive reference shots before the movie was out, but seems unlikely with how uptight WB seems about security, that they'd risk images leaking.