Unfortunately not many of us live in a position where we can just run over to WDW at the drop of a hat, vacation there more than once a year, or sometimes more than once a few years. My last trip there was September 2012, so there's quite a bit that would be "new" to me on a future trip that's now "been there, seen it" to others. Sure, the option is always there to check these things out on YouTube (which I have), but there's still something about being there in person to see them. So the question is: If you were to visit WDW right now, what would be new for you since your last trip?
For me: Everything about New Fantasyland (Dwarfs Mine Train, Little Mermaid, Be Our Guest, Gaston's Tavern, etc). On our last trip, we were just a few days short of Disney allowing sneak viewings by guests into part of NF. The redone lobby and the new bungalows at the Polynesian would be something new to see in person. The Peter Pan's Flight redesigned queue. The Tangled bathroom area and new walkway into Liberty Square. The repainted areas in Tomorrowland (including the TTA building). The entire FP+ experience is new since my last visit. The new walkway in Africa in AK. Several attraction closings in DHS. Closing of Maelstrom. Updating of Test Track. Construction of Avatar-land in AK.
For me: Everything about New Fantasyland (Dwarfs Mine Train, Little Mermaid, Be Our Guest, Gaston's Tavern, etc). On our last trip, we were just a few days short of Disney allowing sneak viewings by guests into part of NF. The redone lobby and the new bungalows at the Polynesian would be something new to see in person. The Peter Pan's Flight redesigned queue. The Tangled bathroom area and new walkway into Liberty Square. The repainted areas in Tomorrowland (including the TTA building). The entire FP+ experience is new since my last visit. The new walkway in Africa in AK. Several attraction closings in DHS. Closing of Maelstrom. Updating of Test Track. Construction of Avatar-land in AK.