I feel like I stepped into a time travel machine with my base 2015 rMB, since so many design elements transferred directly over to the rMBP redesign: branding of product name instead of on bottom of chassis, its associated chin underneath the glass bezel and screen, trimmed bezel in general around the screen, expanded trackpad for its size and lack of buffer between it and the edge and keyboard, trimmed speaker area (even if rMB doesn't have anything on the side of the keyboard), lack of logo glow, butterfly mechanism (even if more travel and 2nd gen, I cannot wait to try this at the store because i am curious), lack of MagSafe, and USB-C as the only hope (in case of one port) or USB-C up the wazoo in case of 13 and 15" even though 13" 4-port is slightly neutered.
its pretty much the air, 13" no touchbar is like the regular Macbook and 13" and 15" touchbar are the "pros" or XPS'es in my mind, but minus the gaming part, and port flexibility haha