I mentioned in my previous post, the biggest change is they went to a motorized windshield shade. Mine just has curtains and sun visors. I don't mind the curtains for privacy but when driving into the sun the sun visors don't work that great whereas the motorized shade can be lowered while driving, much better. Also sun coming in the side windows can be problematic while driving, the 2017 has manual roller side window sun shades and then shorter curtains for privacy to go over those.
This is related to something the Winnebago had that other in the same price point didn't, they use MCD roller shades for all the windows. Much nicer than the cheap accordion stuff I saw on the ACE. Now they just added some more up front which is smart.
Other changes I noticed where a soft vinyl ceiling instead of the fuzzy carpet like stuff and a extra cabinet over the door where as the 2016 just had a set of key hooks.
Also noticed they changed the leveler control, might have been downgraded. Mine has a lcd screen that tells me what its doing and any issue, the 2017 doesn't have the screen. I think the leveling jacks are now spring return as well, mine don't have springs they are hydraulic retract.
2016 Winnebago Vista 31be - Blue Ox Rear Track Bar - Centramatic Wheel balancers
2016 Jeep Wrangler Unlimited Rubicon Toad - Readybrute Elite Towbar