Meh... demand is high right now, but you need to ask yourself why. The answer is that supply can't keep up. If you trade in your current RV, you might get a little more than you normally would, but then you'll either have to wait a long time for a new one, or have to fight with the rest of the people that are willing to overpay for existing stock. And let's be honest, RVs aren't known for high quality, and when demand is high you can expect quality to suffer even more as the push is for greater output.
Seems to me that it would make more sense (and cents) to wait out this temporary demand surge. Now, if you aren't opposed to selling high (now) and buying low (next fall or in 2 years) and going without a RV for that time period, jump on it.
Personally, I'd rather keep my known entity trailer and continue to enjoy it. In fact, our Vermont trip (supposed to be on right now) was cancelled due to new quarantines, so we rescheduled our group to our regular lake. Weather looks beautiful next week. I'm happy to keep my current, paid for, camper and enjoy it!