I ordered my 22" Kirkland off of Costco's website early last week. I was pleased to find it was the new design when it showed up at my house. I've taken several pictures that I will get posted here. I'm very impressed so far with the bag. It is built pretty well for a sub-$100 bag. So far, here's what I can tell you about overhead fitment:
Delta:
737-800 (winglets) - Fits in FC, handle first, on both sides of the aisle
MD-88 - Fits in Economy, handle first, on the ABC side. DE side had to be turned sideways.
I will continue to update this as I fly each week.