Harry Potter creator J.K. Rowling has unveiled an interactive website featuring new material about her fictional young wizard.

The Harry Potter adventures will also be sold as e-books for the first time through the new website, which will appear at the end of July on a limited basis.

Rowling told reporters in London Thursday she does not intend to write an eighth book in the Harry Potter series, but that she will develop the books' central characters further through new material she will publish on the Internet site.

The www.pottermore.com site will open July 31, with access limited to 1 million Potter fans who pass a special test. Full public access is expected in October, with versions in English, French, German and Spanish.