Just recently, Madhouse and Animax has just revealed the character designs and the cast members of the upcoming third installment of the Marvel Anime Series (other series include: Iron Man and Wolverine), X-Men!
Toshiyuki Morikawa and Rikiya Koyama will reprise their respective roles as Cyclops/Scott Summers and Wolverine/Logan aka James Howlett in X-Men. Cyclops made an appearance on the fifth and sixth episodes of the Wolverine anime in which Koyama stars as Wolverine. Yuriko Hino, who voiced Jean Grey in the live-action films will reprise her role in the anime as well. Additional cast members and the mutants they will voice are:
Professor X: Katsunosuke Hori; Storm: Aya Hisakawa; Emma Frost: Kaori Yamagata; Yui Sasaki: Ryōko Sakakibara; Hisako Ichiki: Yukari Tamura; Beast: Hideyuki Tanaka
An emergency call for help is sent, and the founder of the X-Men, Professor X, summons his team from all over the globe. The reunited X-Men travel to Japan where they encounter a supremacist cult called the U-Men.
Marvel Anime: X-Men premieres on April 1st, replacing Marvel Anime: Wolverine and will start with the first episode called, The Return - Gathering (The Return － 集結) that follows the premise of the series' plot.
Source: Anime News Network, X-Men Anime Official Website