Wikipedia
Pottermore is the digital publishing, e-commerce, entertainment and news company from J.K. Rowling and is the global digital publisher of Harry Potter and J.K. Rowling’s Wizarding World. It offers news, features, and articles as well as new and previously unreleased writing by J.K. Rowling. The site features Rowling's thoughts, several pages of unpublished text, and a sales resource for e-book and audiobook versions of the seven Harry Potter novels.
On 31 July 2011, registration for the limited beta release began. The limited release allowed the first million fans registered to complete The Magical Quill challenge. The original registration was intended to be October 2011 but was delayed until 14 April 2012. Pottermore was originally launched in partnership with Sony, however in April 2014, it was announced that Pottermore had concluded its relationship with Sony and entered its next developmental phase both creatively and commercially. On 22 September 2015, Pottermore launched a newly designed site containing news, features and articles plus previously unreleased writing by J.K. Rowling and removed some features including the interactive Moment illustrations, House Cup and Sorting ceremony. A newly designed Sorting Ceremony was subsequently launched in January 2016 in which users could reclaim their old house or be re-sorted.