As part of Gigazine's huge fall anime preview, they detailed cast and song info for Mobile Suit Gundam AGE:
Flit Asuno: Toshiyuki Toyonaga (Mikado from Durarara!!, Middle School Taira from Capeta)
Emily Armond: Aya Endo (Miyuki from Lucky Star, Sheryl from Macross Frontier)
Dike Ganheiru: Kouki Miyata (Ken from Kyou Kara Maoh!, Rhythm from Shugo Chara!)
Grudech Einoa: Hiroki Touchi (Chaa from Angel Beats!, Daguza from Mobile Suit Gundam Unicorn)
Wolf Eniakuru: Daisuke Ono (Hugh from The Mystic Archives of Dantalian, Itsuki from The Melancholy of Haruhi Suzumiya)
Narration: Kazuhiko Inoue (Jerid from Mobile Suit Zeta Gundam, Nyanko-sensei from Natsume Yujincho)
Opening Theme Song: JAM Project (who also did the Cardfight!! Vanguard opening)
Ending Theme Song: Minami Kuribayashi (who recently did the opening for Infinite Stratos) "Kimi no Naka no Eiyū" ("The Hero in You")
Note that these are not the officially translated English names.
If you missed the video preview earlier this week, check here.