Kevin Feige says they have their movies planned through 2021
http://www.superherohype.com/news/articles/178679-kevin-feige-says-marvel-has-their-movies-planned-through-2021

This is what I'm hoping for.

2015
Avengers: Age of Ultron
Antman

2016
Doctor Strange
Black Panther

2017
Thor: Nine Realms
Captain America: The Last Avenger

2018
Avengers: Civil War
The InHumans

2019
Daredevil: The Man Without Fear
Doctor Strange: The Oath

2020
Heroes for Hire
(The Black Widow and Falcon hire a team of the world's finest non-Avengers:
Iron Fist, Punisher, Moon Knight, Ghost Rider, Luke Cage, Silver Sable, Blade)
Guardians of the Galaxy: The Korvac Chronicle

2021
The Infinity Gauntlet (Bringing all the heroes and villains together to face Thanos)

One could dream.