Series Completion

In December 2005, Rowling stated on her web site, "2006 will be the year when I write the final book in the Harry Potter series." Since then she has been regularly updating readers through her online regarding the progress of Harry Potter and the Deathly Hallows, with the release date of 21 July 2007.

The book itself was finished on 11 January 2007 in the Balmoral Hotel, Edinburgh, where she scrawled a message on the back of a bust of Hermes. It read: "JK Rowling finished writing Harry Potter and the Deathly Hallows in this room (652) on 11 January 2007."
Rowling herself has stated that the last chapter of the seventh book (in fact, the epilogue) was completed "in something like 1990".

Evolution Of Harry Potter

Despite Rowling's statement that she did not have any particular age group in mind when she began to write the Harry Potter books, the publishers initially targeted them at children age nine to eleven. On the eve of publishing, Joanne Rowling was asked by her publishers to adopt a more gender-neutral pen name, in order to appeal to the male members of this age group, fearing that they would not be interested in reading a novel they knew to be written by a woman. She elected to use J. K. Rowling (Joanne Kathleen Rowling), using her grandmother's name as her second name, because she has no middle name.

The first Harry Potter book was published in the United Kingdom by Bloomsbury in July 1997 and in the United States by Scholastic in September of 1998, but not before Rowling had received $105,000 for the American rights – an unprecedented amount for a children's book by a then unknown author. Fearing that American readers would not associate the word "philosopher" with a magical theme (as a Philosopher's Stone is alchemy-related), Scholastic insisted that the book be given the title Harry Potter and the Sorcerer's Stone for the American market.

Courtesy: JKRowling.com

Origins Of Harry Potter

In 1990, J. K. Rowling was on a crowded train from Manchester to London when the idea for Harry suddenly formed in her mind. Rowling gives an account of the experience on her website saying:

"  I had been writing almost continuously since the age of six but I had never been so excited about an idea before. I simply sat and thought, for four (delayed train) hours, and all the details bubbled up in my brain, and this scrawny, black-haired, bespectacled boy who didn't know he was a wizard became more and more real to me."

In 1995, Harry Potter and the Philosopher's Stone was completed and the manuscript was sent off to prospective agents. The second agent she tried, Christopher Little, offered to represent her and sent the manuscript to Bloomsbury. After eight other publishers had rejected Philosopher's Stone, Bloomsbury offered Rowling a £2,500 advance for its publication.