Seinen/BL supernatural thriller
The Summer Hikaru Died (Hikaru ga Shinda Natsu) has an "important announcement" June 4.
https://x.com/MangaMoguraRE/status/1782646542668550287
One of the buzziest manga in Japan. Big sales, lots of award nominations and poll wins, great reviews. Seems early for an anime (5 volumes) but that seems most likely (could be a live-action too).