Oh, big kick in the face for non-believers.
Awesome man, I've heard about this as well, and don't mind anyone else here, they just don't believe it cause I'm the first one who said it. lol. Anyway, HP has been in the works for a long time. I'm curious as to who told you this...
Because everything I've heard has pointed it out to being true.
This rumor's roots can be traced back to when I was walking in Epcot and heard a man on a cell phone talking about the attraction story boards.
About a year later a Universal Executive mentioned it in a speech that Disney has Harry Potter "wrapped up."
Most recently, my Imagineer friend Jon has confirmed that it is in the works, and the 20K lagoon is planned to be filled in for the Harry Potter attraction. Though he also said that HP is tied up in rights, as Disney is in contract negotiations with J.K. Rowling and Time Warner for the theme park rights to build the actual attraction. Currently, Disney has the rights to use Harry Potter Music in the parks, rights to air Harry Potter on TV, and currenty sells Harry Potter items in the parks. This is looking to be more and more of a done deal. Of course, most others you ask will say it's totally false, but from my perspective, I say it's all 100% true, and there will be a Harry Potter ride somewhere.