I also see a note on the frame photo: "Greater use of 70ksi steel for improved towing and payload". This doesn't suggest they are backing down due to the SAE standard (which is a joke anyway).
For reference, the steel in the existing F150 frame is 12ga wall thickness 50 ksi in the shorter wheelbase versions(and non-HD payload). The crew/6.5' box 157" frame (same as the HD payload frame) is 10ga wall thickness 36ksi.
I recall reading some recent 3/4ton/1ton literature touting that the frame was high-strength 36ksi steel (Ram maybe?). That is not high strength. The 70ksi steel in the new F150 frame is starting to earn rights to that term.
