Right now Rock ‘n’ Roller Coaster is expected to reopen in the Summer of 2024, but Disney has not given a specific date at this time.
Currently, we lack a precise reopening timeline. Disney's official website mentions Rock 'n' Roller Coaster's return in "Summer 2024," spanning from late May to early September.
However, we are still too far away to get a reopening date as way too many things can happen to delay the project.
To us, Summer 2024 sounds very vague, so it would not surprise us if it was extended until after that.