I sincerely hope for an A21 release, but it is, of course, up to you if you want to delay for A22. My concern there is if you delay, and start work on aligning with A22's new stuff, what if it takes enough work that A23 looms? Would it be delayed again? At what point is it better to just focus on the current update and allow them to release on their faster schedule? (Not a baiting question, a sincere query because it's actually something I think is hard to judge.)