Does the 13" model support 5k monitors like the Dell 2715K? I read in the past that you need Displayport 1.3 to run a 5k monitor on a single cable and that would only come with Intel Cannonlake chips. So far only the 15" with dual cable could run that monitor (that until recently was the only 5k external monitor). The 13" model not even on two cables could run it. Now I read that also the new MBP 13" supports 5k but then an Apple employee told me instead that only the 15" model does. I am totally confused. Someone got the answer?