Please know that the IMDb app for Android does not currently offer push notifications for items in your Watchlist. However, we do offer email subscriptions and newsletters for Watchlisted TV shows and movies about to air/release.
For more information on accessing your IMDb app notifications and settings, please see our Help page: IMDb App Notifications
For more information on your IMDb email preferences, please see our Help page: Site preferences
Please let us know if we can offer any further help.