And the flatter top lid. There’s a slight curve to the old one that creates the illusion of thinness—whereas this one is completely flat it seems.Prompted by my discussion with @m1mavrerick, I did a screen grab of Apple's renders of the old vs. new 16" MBPs and cropped to align the top of the cases and cut off the feet from the newer model.
To me, the flatter edge + feet seems to add to the thickness illusion.
View attachment 1870603