I have been on both a fair bit and yes this years is softer and has a bigger sweet spot. Both skis have that planky GS feel to them on groomed stuff , last years more so. In the powder you won't notice a bunch of difference unless your on the lighter side. Next years is called the R/ex and is on the walls in some shops already , it skis the same and is the same ski as this years.
I skied / owned both last years and this years 10.ex however last years were 198 vs. 191 this year. This year's was a little softer and just not right for me as I'm a large person, but then they were shorter than last years pair. I love last year's 10.ex and plan to hang on to them. They were great in the mush at Mammoth last spring.