Harry Potter New Book?

In December of 2005, Rowling declared on her web site that "2006 will be the year when I write the final book in the Harry Potter series." Updates have since followed in her online diary chronicling the progress of Harry Potter and the Deathly Hallows, though proclamation of completion and release date have not accompanied them. Many fans speculate that the book will be published in 2007, with a particular fixation on the numerologically-significant July 7, 2007, but as of December 6, 2006 there had been no confirmation of a release date from either Rowling or her publishers.

Rowling herself has stated that the last chapter of the seventh book was completed some time ago, before writing the third book. According to her, the last word in the book is "scar".
Rowling also confirmed during an interview with the Associated Press August 14, 2006 that Hermione would indeed become "more than a friend" to pal Ron Weasley, but not before a brief fling with Neville Longbottom. Rumours of a possible love triangle have yet to be confirmed.
In June 2006, Rowling, on an appearance on the British talk show Richard & Judy, announced that the chapter had been modified as one character "got a reprieve" and two others who previously survived the story had in fact been killed. She also said she could see the logic in killing off Harry in order to stop other writers from writing books about Harry's life after Hogwarts.

Regarding the existence of Harry Potter novels beyond the seventh, Rowling has said that she might write an eighth book some day, but it will not continue the life of Harry and his friends. If she does, she intends it to be a sort of encyclopedia of the wizarding world, containing concepts and snippets of information that were not relevant enough to the novels' plots to be included in them. She has also said that she will not write any sort of prequel to the novels, since by the time the series ends all the necessary back story will have been revealed.