Digimon Adventure Tri is now a 6 part film, with the first releasing on November 21, 2015.

Natsuki Hanae as Taichi Yagami
Yoshimasa Hosoya as Yamato Ishida
Suzuko Mimori as Sora Takenouchi
Mutsumi Tamura as Kōshirō Izumi
Hitomi Yoshida as Mimi Tachikawa
Junya Ikeda as Jō Kido
Junya Enoki as Takeru Takaishi
MAO as Hikari Yagami

via ANN

The cast for digimon will remain the same, however the human characters in Digimon Adventure tri. will star a new cast: