While answering questions on Quora, Joe Russo came out and explained that the events of Captain America: Civil War will continue to reverberate through the greater Marvel Cinematic Universe as new Phase 3 films hit theaters.
Although that particular film’s story was neatly tied up when Steve Rogers saved Team Cap from the Raft prison, nobody really won, and the Sokovia Accords still definitely exist.
This means that events set in motion by the latest Marvel movie will impact everything we see in the near future — possibly even the battle with Thanos during the events of Avengers: Infinity War.