The new Xium S2 Premium has an updated carbon top sheet design that is intended to improve responsiveness. It also has a sightly lower profile tip. And the new ski continues with the "3-edge" section continues, which helps the camber with a smooth pressure distribution.
Nordic Ultratune will be getting a handful of the new skis in the coming days.
If you'd like a pair, let us know and if there's an appropriate flex for you, then Ultratune can get you on them while the ski season is still going strong!