The next Special Heroes summoning event in Fire Emblem Heroes will be “Spring Eternal”, running between 7th March and 7th April 2023.
(Japanese trailer available here.)
The featured Heroes in their bunny costumes are: Bernadetta, Triandra, Ashe and Harmonic Karla (with Freyja).
In addition, Michalis can be obtained from the upcoming Tempest Trials+ event, fulfilling the promise made last year.