You can check out the rest of the leak as well as the original Russo Brothers interview over at The Huffington Post.
There are potential SPOILERS for Avengers 4 below, and definite spoilers for Infinity War, so read ahead at your own risk.
An old interview with the Russo Brothers from 2 years ago has given a new Avengers 4 rumor some credibility, according to a new report.
The leak goes on to talk about time travel being a huge piece of the Avengers 4 story, which has been hinted at for weeks now in the wake of Infinity War.