Will be scheduled to release in 2024!
Pre-registration has begun on their official website, which will both release Japanese and English version!
https://madoka-exedra.com
Pre-registration on google playstore:
https://play.google.com/store/apps/details?id=com.aniplex.magia.exedra.en
Apparently, It will be a turn-based game just like Honkai Starrail! I hope to see more of their teaser for this game