It is Mac only. If you don't have one, no need to spend time following the link
Downloading macOS in the first place is also a violation of copyright law if you don't own either a Mac or a copy of OS X 10.7. It's also probably a violation of the Mac App Store TOS if you don't own a Mac, which I guess could lead to getting kicked out of the Apple Developer Program if they ever start cracking down on Hackintoshes.
The showstopper for most is that you can't really use anything > a 1080p monitor w/o squinting, b/c of some peculiarity with macOS ui scaling.
I'm shocked people on here of all places are so shortsighted they'd mass downvote for implying that software announcements are useful even if you can't use the software yourself. Are hardware announcements are pointless unless you plan on buying the hardware at the moment it's announced?
Even looking into a tool you can't use in order to find some equivalent for your platform is useful.