I am no longer a Marquis dealer so I have no inside information, but what I gathered from my time selling them is that they are very cautious with any changes to the Signature series. They take the if it isn't broken don't fix it approach. Plus, as Hottubguy said, they just spent the last 2+ years working on the Vector21 spas and the ATV's. My guess is if they do anything new for 2018, it would be a refresh to the e-series as those look pretty dated, in my opinion.