UPDATE: Looks like we got hosed. Turns out this "teaser" is nothing more than a fake, fan-made clip. We've heard from several people who attended Disney's D23 event, and they say this was nothing like what was really shown. We'll leave the video below incase anyone is still curious to see it, but just know it's 100% not real.
Those following Marvel's rapidly expanding cinematic universe are already well aware that the third Captain America film is in production, with a release date already confirmed for May 6th, 2016. Over the weekend, Disney held its annual D23 fan club expo in Anaheim, California, and a few lucky attendees got to see a special Marvel presentation. Turns out, these people were treated to one of the very first showings of the teaser trailer for the new Captain America. As should be expected in age of smartphones and internet, a portion of it was recorded and shared on YouTube.