At the moment it's just a Proof of Concept created by some well-known Monero project contributors.
The main target is a native Monero DEX (low fee & privacy) and Fiat <-> XMR because that is missing on bisq. Other coins <-> XMR is possible on bisq.
I don't think bisq exchange is allowing listing of new coins anymore and they stopped that last year I think, so it would be great to see Haveno having this listing option back.