It's a bit weird though as looks like it will have the same general manager given his comments: “I’m sort of like a dad. I love the Swan, I love the Dolphin, but the newest baby is going to be something special,” said Fred Sawyers, general manager of the Walt Disney World Swan and Dolphin resort.
Also odd that Marriott already has used the name "Cove" before - there is a Cove at Atlantis and a Frenchman's Cove on St. Thomas. You'd think they'd go with something unique to avoid any confusion, especially knowing they can easily just pick a different animal to tie into the Swolphin