I'm interested in this as well, but I don't think there's a definitive answer yet.
I remember way back in the beginning of EA, it was said that local split-screen co-op would be available, or would probably be available, sometime during EA, but not right at the beginning of EA. Hence why my S.O. and I bought 2 copies of the game and 2 Stadia subscriptions / hardware, so we could play EA together.
Since that time however, I don't recall hearing ANYTHING else at all about local co-op, good or bad.
Maybe someone else heard some mention of it in a Panel from Hell, but I have not.