We’re now integrating ink! 4.0 beta on the mainnet and are in sync with the OpenBrush developers to ensure that proper tooling is in place.
Depending on the Parity Technologies timeline and the level of comfort of Aleph Zero use case teams, we will launch the smart contracts in ink! 4.0 beta after the testnet integration, or after the final release which is currently scheduled for the beginning of January 2023.
Keep an eye out for relevant announcements to learn more.