The studio handling it is confirmed to be CloverWorks. Here's your first key visual:
Sources:
https://twitter.com/shadowshouse_yj/...03478591557638
https://shadowshouse-anime.com/
This is an interesting development to me, considering that they also animated The Promised Neverland and I think this should draw a fairly similar audience.
I binged the entire manga in a night back when this first got announced, because I'd never heard of it. It is
very good.