Personal speculation on LC:
I think it boils down to IP selection and what options they had considered for the sake of this land. Regardless if it's Zelda, Wicked, or any other IP. Part of me wonders if they've finally inked something out to be able to move forward in general on plans that have been sitting for a while as a result of a potential "Waiting Period" to ensure they were confident on a specific option.
My thinking is Wicked, if only because I think the Emerald City would be an amazing vista to have alongside Hogwarts Castle, Jurassic World: Velocicoaster and The Incredible Hulk. I honestly think Zelda probably requires more than what they can do for IOA in general, and that retooling and relooking at the concepts for something else down the road (like at Epic) would be a better means of bringing that IP forward.
Wicked feels like a more "Logical" choice, that could capitalize off of the iconography of both the original MGM film and of Part One and For Good, in a way that'd make it a magnet for the park like how Hogwarts is.