Looks like the 2021 Palisade won't be out until fall 2020. The very best deals might be when the 2021's start coming in and they want to clear out the 2020s.
But, I'm also told March is a pretty good time to buy a car as it this last chance for dealerships to boost their 1st quarter sales stats. The current Hyundai promotions expire 3/3 and they don't look to be very interesting for the Palisade. Not sure if the new promotions will be better or not.