Harry potter 8! no lie!?

hi there, my brother has told me from a reliable source that J K rowling will be releasing a new book. It is the eighth in the harry potter series but is not named yet, the stroryline basically involves taking the micky out of neville shortbackside (longbottom) and voldemort skateboarding around. the plot thickens when harry beats voldemort at a game of cluedo. has anyone else head such rumours?