It’s been finally confirmed and the wait is almost over. Star Wars Episode 8 will be officially called “Star Wars: The Last Jedi” and will be released on December 15th 2017. It will be written and directed by Rian Johnson and produced by Kathleen Kennedy and Ram Bergman and executive produced by J.J. Abrams, Jason McGatlin, and Tom Karnowski, continuing off from Star Wars: The Force Awakens presumably (no spoilers, please). A press release will be later released providing the fans around the world with more information about the next chapter.
Source: Official Star Wars Blog