Marvelous shared the latest on Fate/Extella Link today with a special broadcast where a new playable character was revealed with the Archer-class Servant Robin hood.
Robin Hood (CV: Kosuke Toriumi)
Noble Phantasm: Yew Bow
Now that the new Archer Servant was revealed, that leaves six remaining playable characters. Based on the previous hint, that leaves an Archer, a Caster, two Berserkers, and a Ruler remaining.
Fate/Extella Link releases in Japan on June 7, 2018 for PlayStation 4 and PlayStation Vita.