From the Bisq wiki on Bisq2 here:
"The follow trade protocols are on the roadmap:
* Bisq Easy: Reputation based trading with no security deposit requirements (included in the intitial launch)
* Bisq Multisig: Similar to the current trade protocol used by Bisq 1 but with some improvements
* Submarine Swaps: Atomic swap of LN BTC <-> mainnet BTC
* Liquid Submarine Swaps: Atomic swap of LN BTC <-> Liquid BTC
* Liquid Multisig: Bisq Multisig ported to Liquid network with faster confirmation, lower fees and better privacy (confidential transactions)
* Bisq Lightning: LN BTC <-> Fiat (chain of multiple protocols: Liquid * Submarine Swaps, Liquid Multisig)
* Liquid Swaps: Atomic swap of Liquid BTC <-> Liquid assets like L-USDT
BSQ Swaps: Atomic swap of BSQ <-> BTC
Monero Swaps: Cross chain atomic swap of BTC <-> XMR"