why would they need to show anything more from Captain America? we had a solo movie in 2011 and he was inside Avengers. the public knows the actor,the look of the suit and the character. this is a reboot for Turtles. you build up to a trailer. you can not show the new look just like that. they need to realese a teaser image where the turtles stand inside the shadows. next a teaser trailer and a poster.