When I was a Marquis dealer, next model year hot tubs usually starting coming out in November, though unlike the auto industry, there are not always changes from year to year. Many times the new year just brings new pricing.
Each dealer is different when it comes to floor models. I will discount floor models but the amount depends on how long the hot tub has been on my floor, is it filled or empty, and blemishes, how badly I want to sell that display model and honestly, the mood I'm in that day