Only difference now is that Disneyland doesn't really create anything new. Back in the 50's and 60's we had television specials for the opening of Disneyland, The Haunted Mansion, and Pirates of the Caribbean (not to mention the entire Disneyland TV show). Then in the 80's and 90's we had TV specials for Star Tours, Indiana Jones, New Tomorrowland, Tower of Terror, Splash Mountain, and just about everything new. Early 2000's we had specials for DCA, TDS, Expedition Everest, and even a general behind the scenes look at Walt Disney Imagineering. Now what do we get? Was there a special for the new Star Tours or an in-depth look at how Cars Land and BVS were made? We are getting a season of Guardians of the Galaxy on Disney XD based off Mission Breakout, but that show only exists because of the movie, not because of Disneyland, but I'll award you one point for it.
Let's face it, Disney Parks are constantly used to advertise new movies, TV shows, or whatever else Disney is making, but never do we ever see movies now advertise Disneyland's newest offerings and rarely do we see a television special truly showcasing the latest expansion to the parks. I hope we get a great TV special for Galaxy's Edge with Daisy Ridley and John Boyega hosting it, but I highly doubt we will.