According to the press release of Sunrise, the new anime "Mobile Suit Gundam Unicorn" will be released online simultaneously in multiple languages. This statement probably refers to the previous announcement by Bandai Namco HD about the worldwide streaming of a new Gundam series in ten languages including English, German, and French. The type of Gundam Unicorn has not been officially announced yet. Judging from Fukui Harutoshi's comment "the continuity of episode 1..." published in Gundam Ace, there will be more than one episode.

Source: Anime!Anime!

Staff of Gundam Unicorn
Director: Furuhashi Kazuhiro ("Rurouni Kenshin: Tsuiokuhen", "Zipang")
Scenario: Mutou Yasuyuki ("Afro Samurai", "Sengoku Basara")
Character Designer: Takahashi Kumiko ("Ouran High School Host Club", "Cardcaptor Sakura")
Mecha Designers:
Katoki Hajime ("Mobile Suit Gundam Wing")
Sayama Yoshinori ("Knights of Ramune & 40 Fire")
Ishigaki Junya ("Macross Zero")
Genba Nobuhiko ("Persona -trinity soul-")

Gundam Unicorn official website