Harry Potter and the Order of the PhoenixPhoenix.

Yahoo! News was one place with this.

J.K. Rowling has annouced that Book 5 will be called \”Harry Potter and the Order of the Phoenix\”. Rowling has no deadline for the book and said it would probably
not be ready by July, as had been rumored. Two other books will be out soon “Fantastic Beasts And Where to Find Them\’\’ and “Quidditch
Through the Ages\’\’ – will benefit Comic Relief.

“Fantastic Beasts\’\’ is a title on the boy wizard\’s school
supply list in a previous book. The second new volume will be an
anthology of Harry\’s favorite sport, quidditch.