The Microsoft Surface Pro 4 might be launched with Windows 10 in October. We summarize all relevant rumors about the Surface Pro 4 and give a perspective on the upcoming tablet. There is already one officially confirmed fact.
http://www.notebookcheck.net/Microsoft-Surface-Pro-4-Rumors-Facts-and-Dates.145754.0.html
Broadwell? Why wouldn't Microsoft use Skylake processors?
MS sould provide Skylake Core M and U CPU series and not Broadwell.
Since it will been released in Autumn there's no excuse using old architecture since from August according to Intel Skylake will be on market across several OEM proposal.
"•Intel Core M: The Apple MacBook 12 (see review) led the way"
It was difficult to resist planting the "Apple rulez" flag and Adreas succumbed to the urge.
I am going to give it a try.
ThinkPad Yoga 12 and Surface was candidates but 3/2 screen won the battle for surface.