Likely some more inventory management, though a redeployment is possible as well (given what is available). Maybe @Ourusualbeach can see some trend to foreshadow the latter.
All app info gets better and more complete as you approach your sailing - things like shows and perhaps venue operating hours may not be complete till on board (or set the app to that sailing).
How far out from sailing time you can get credit for watching the muster videos (via any connection) seems to vary a bit up to a max of about 16 hours.