This starts with Fate/Grand Order ‐First Order-, a feature length TV anime special coming for the end of the 2016.
Yatterman Night’s Keisuke Goto does the anime character designs with Ayumi Sekine (makuranodanshi) on scripts.
Shortly after fans noticed that the cover of the December issue of magazine Comptiq tipped the hand, a Fate/EXTELLA Nico Nico Douga stream revealed news that smartphone RPG Fate/Grand Order will be getting an anime adaptation.