What I read on Realskiers is the core changed from maple to poplar, which is a bit lighter, stiffer, and damper.
They USUALLY get things right.
Something I noticed with with realskiers is that the scores should really be taken with a grain of salt (and some tequila if you like). Totally depending on who and where and tune... I noticed that my daily driver xdrive 88 FS scored 90 last year and was a favourite. Year before it scored 82 or 83. Needless to say, ski only changed graphics from 2016 to 2017...