The news is buried a bit on J. K. Rowling's website — on the FAQs and Rumours page — but the author has announced she has started on a Harry Potter encyclopedia. Here is what she has to say:
"For a long time I have been promising an encyclopaedia of Harry's world, and I have started work on this now — some of it forms the new content in Pottermore. It is likely to be a time-consuming job, but when finished I shall donate all royalties to charity."
Just last week Rowling's publisher announced the title and synopsis of her first adult novel, The Casual Vacancy.