Kamen Rider Drive's Official Twitter who had announced Inactivity of the Account the other day had posted the news of Drive Saga 3 as their Last Tweet. The title of the movie is Drive Saga: Kamen Rider Brain. This will release in year 2035 which 18 years in the future. He will partner Eiji Tomari (Kamen Rider Dark Drive). His Henshin Shift Car is called as Shift Handkerchief.
But there is possibility of Kamen Rider Brain if the Cast decide to do 18 YEARS AFTER.