Although the third Captain America film has been officially announced, we are not going to see it until May of 2016. The production has not even begun yet and Marvel is currently busy promoting the Avengers Age of Ultron. Due to the fact that the next Star Spangled-superhero movie has a confirmed title Civil War and would feature the conflict between Marvel superheroes and taking the sides of either Steve Rogers or Tony Stark, so many fans around the world are already and crazily excited about the film. One of the products of excited fans are the fan-made trailers. And guess what, there is already a new fan-made trailer for the Captain America Civil War roaming around the internet. See it below.
I Hope you are doing great, cheers!