New domains have been registered by WB (through the MarkMonitor service). There's a few for Harry Potter and The Wizarding World. Which suggests WB might be planning a FanDome event for the Harry Potter RPG.
damn, rocksteady's game leaked already huh
This.I think they just want to protect the "Fandome" brand URLs across all of their IP. I wouldn't take it as an indication that there will necessarily be an HP event in the near future. Domains are basically free to big corporations like WB.