Actually there is a "Halloween 9." It's the 2007 film Halloween: A Rob Zombie Film, which is a reboot of the Halloween franchise.
If you are referring to a sequel to Halloween: Resurrection or a sequel to Halloween: The Curse of Michael Myers (because there are two continuities within the original series: the Halloween 4 - 6 timeline and the Halloween H20 timeline), then the answer is no.
There should be one in the near future.