Update: So it's been a while since much was said about Xenoblade X but recently more infomation about the games development was released.
Tetsuya Takahashi, the games director, spoke about the many artist working on the game and stated that they are designing many different alien races for the game. He said each race will be different and have it's own distenctive traits.
Also mentioned was the addition of a new script writer, Kazuho Hyodo, who is famous for his science fiction, came on board to work beside the original game script writer Yuichiro Takeda. Most would know Kazuho Hyodo better by his wirting for many of the Gundam films.
Additionally, Tetsuya Takahashi, stated that the game is nearly complete. It is still on track for release world with this coming year with a likely summer release.
UPDATE: Today it was revealed one of the designers for the mechs in Xenoblade X was the main artist for Metal Gear Rising