According to Screamscape:
Still unofficial, but it looks growingly likely Universal's IOA has finally gotten the rights to Harry Potter. Personally, I think it will fit in there great, and am glad someone finally got the rights to this franchise; and someone, unlike Six Flags, that might actually theme it right, instead of slapping a logo on a coaster.A Screamscape source has confirmed to us that the IOA project is indeed a real Harry Potter project. No more false rumors claiming “letters of intent” from J.K. Rowling to Disney and all that nonsense, it seems that Universal has sealed the deal at last. This has been a long time coming too since Universal has been trying to gain Harry Potter since way back when the first film was still being shot.