Dell will launch its updated XPS 13 and XPS 15 with Intel Skylake processors in October 2015. The XPS 15 comes with a new 4K Infinity display and Nvidia GeForce GTX 960M. The XPS 12 2in1 will follow next January.
http://www.notebookcheck.net/Dell-announces-XPS-13-and-XPS-15-with-InfinityEdge-and-new-XPS-12-2-in-1.151708.0.html