I'm curious about it too. From what i knew, the cost for producing CGI/3-D based works are more expensive than usual 2d animation. Maybe they got a lot of budget for it.
I hope it gonna be good because i don't watch anime version of Beastars because it used CGI. Idk, it just look weird.
So excited for the anime. I just wish that it will be animated in usual normal anime style/visual instead of cgi.