What, 3, 4 fake leaks in a month? WoD and Legion had like 6 per week.
The same N'zoth/Azshara/South Seas expansion that was obviously coming after Cataclysm, MoP and WoD? The one with player ships and massive underwater zones including Nazjatar as a city? Most predictions got it wrong because Blizzard chose to focus on a poorly written faction war built around a character that totally wasn't going to be another Garrosh/Arthas, except she was. And now it's also the Black Empire expansion.
Watch Blizzard pull a new main storyline out of the blue and get rid of Sylvanas and the Shadowlands in a single patch, like they've done with the Emerald Dream, Argus and Ny'alotha.