There are no discount codes out for November yet. The only discount available is Disney Club, if you are a member. The current discount codes are for check-ins from 8/25-10/2 and have to be booked by July 8. My guess is that you might see a discount code for October and November about a week after that.
You can always book a room now and apply a discount when/if it comes out later. That's probably the smartest move if you want to be at a particular resort, with a particular view, etc.
Good luck!