29 Jun 2011 04:00:31
All seven novels will be available as audiobooks and ebooks in multiple languages through a new website, Pottermore.
Rowling also has written new Potter material for the interactive site.
The site immerses users in the boy wizard's world, combining elements of computer game, social network and online store. Rowling says it includes "information I have been hoarding" about the books' characters and settings.
Rowling unveiled the project Thursday in London. The site goes live July 31.
The last Harry Potter novel, "Harry Potter and the Deathly Hallows," was published in 2007.
