I found a couple of references to the Surface 4 possibly launching as early as March of this year. There is no data to back that up, but we can hope. Also, it is referenced that it will use the upcoming Intel Broxton Atom SoC. Take a look at the following articles. I just hope that the Surface 4 will have USB-C and support USB 3.1 Gen 2. Thunderbolt 3 would be even better. But Panos Panay doesn't have a good track record on ports with the Surface line. Things like SurfaceConnect need to be eliminated in favor of modern standards, particularly USB-C.