Marvelous just released the first trailer of Fate/EXTELLA, that will be released in Japan for PS4 and PS Vita this year.
The trailer introduce two characters, the unnamed Archer (Mumei) from Fate/Extra and Archer Gilgamesh. On top of that, we get a tease of a very familiar Saber.
The video also mentions that there is more coming on June 2nd.
Unfortunately no gameplay is shown, but the music is quite cool. You can check it out below.