Hey, what is x64 win10.zip ? I might be wrong, but for me the files inside look like what game files used to look like many updates ago (the WindowsIconUpdater.exe, the "www" folder...) while files inside win64.7z archive look like the lates game builds (including those which I had problems with on my Win7 laptop) - whole bunch of files, no "www" folder or WindowsIconUpdater.exe file... Maybe you've made a mistake and swapped their names accidentally?
Well, anyway, I haven't played this new version yet, but builds from both archives are launching without problems on my laptop, so, whichever of them is supposed to be "win10x64" version actually, both of them work on my Win7x64.
Or is it just what they are better optimised for, archive names are correct, and I will probably experience more performance issues while actually playing on the version marked as "x64 Win10"?
Anyway, I think I'll give it a try tomorrow and write back the results.