Are harry potter 8 and 9 coming ?
Nope. The series is over, as evident in the 7th book.
*facepalm* -_-There's 7 books in the series. Not 9 or 8
Yes, and soon after books 10 through 47 as well where Voldemort comes back to life again.
The books ended so too have the movies. No series lasts forever.