I guess it's one of those H mysteries, Vigee! I was told the same thing as Julian F , that this was merely a relabeling because the Cashmere composition had always fallen above 65% - a rounding up on the new label, as opposed to the rounding down on the old.
I would have assumed it was different as well, and perhaps it is a different composition. Any input from those who have purchased or handled the new season GMs?
The GM that I purchased feels the same to me as my other shawls.