Did they say if it's for Disneyland Parc or the Walt Disney Studios? 2028 is still quite far away.
Plans still can change until then - look at the third land - Star Wars - of the WDS expansion which was supposed to open in 2025. With still four years before a planned opening in 2028, announcing it at D23 in 2024 would be still way too early to announce it - in my opinion.