It has been confirmed by both Universal Pictures, as well as Vin Diesel, that there will be a 9th and 10th Fast and Furious film. The film will be released in 2019 and 2021, respectively.
The announcement was made late Tuesday night by Diesel via his Instagram account. His post also noted that the 8th film of the franchise, Fast 8 would have a release date of April 14, 2017, which had already been previously announced by Universal.
There aren't any plot details released for Fast 8 as of yet, except that Cuba was a possible location for filming.
Countdown to the release of Fast 8 with the The Movie Hype App.