The Aquaman panel was short and sweet.
Director James Wan confirmed the Aquaman 2 will be more serious taking cues from modern themes and that Patrick Wilson will be returning as Ocean Master.
Warner Bros. has given Aquaman 2 a release date of December 16th, 2022. This would suggest they would attempt to begin shooting by the end of next year, if not sooner.
Filming on the first installment took place at Village Roadshow Studios in Australia and there is a good shot they’ll return to that facility.
SOURCE: DC FANDOME