Is a new generation of SurfaceBook’s around the corner?

Paul Thurrott (a long term trust able source on what goes on inside Microsoft) posted an update yesterday noting that the 1TB SurfaceBook has for a long time been unavailable and is now gone from the Microsoft Store. He observes that this is a typical Microsoft move before a major upgrade, and is quoting the existing rumors that a new line will be introduced in October. As the second generation was mainly an CPU / RAM / HD upgrade, can Microsoft again surprise us with their continued overtures in the HW space?