We have separate builds of the SDK done against Win 8.1 and Win 10. We need to package both versions up into a single zip that is used in the main SDK.
We can't just mash together the two zips, as we need to adjust where the WIn10 builds get packaged up in the final zip. Right now they're under store/x86 and store/ARM. They probably should be under something like "win10/x86" and win10"ARM" since they're supposed to be universal for Win10 store/phone.