My September 13 update shows (on the DT): Windows 10 Pro, Build 14393.rs_1_inmarket.16096-1818.
But, at SETTINGS>SYSTEM>ABOUT it reads: Windows 10 Pro, Version 1607, Build 14393.187.
At this point it is for me, academic, but I wonder if 16096-1818 indicates a 1607 interim update (rather than a version upgrade). Regardless, I created the WinPE boot disc using the 1607 link and all runs as expected.
It's been fun.
Monk