Better base stock or an add to provide additional timing chain protection. Lower basestock viscosity and additional VII or possibly POE to meet increased Fuel Conserving standards.
Of course some will likely just have to change the label as they can already meet the standards. This could be the case for many D1G2 rated synthetics.
I'm really interested to see the SP GF6A Mototcraft Analysis. I kind of use it to represent the typical oil today.
Until some analysis of the SP/GF-6 products are done by PQIA, Polaris, Blackstone or other companies any answer you get will be based on 100% guesswork and speculation.