The title for episode 1 is “Dogmatika Ecclesia, the Virtuous” (or Holy Maiden of Dogmatika, Ecclesia), like the actual card.

The voice cast revealed so far is:
Kana Ichinose as the voice for Ecclesia
Miyuki Sawashiro as the voice for Fleurdelis
Takehito Koyasu as the voice for Dogmatika Maximus

The episode premieres on June 20th, 12PM JST.