If you look into the OS version analytics, there are 397 events registered from "macOS (10.14)".
That's the next version of macOS :)
...and you'd be wrong. It is very common for Apple to test its new browser versions on the public internet and for those version numbers to show up in the logs of popular Apple web sites. It's one of the ways that Think Secret could confirm that a new version was on the way.
Anyways there is surely something strange brewing for the next macOS, as Apple has repeatedly noted that "macOS High Sierra will be the last macOS release to support 32-bit apps without compromise", without specifying what kind of "compromise" might come up (see https://developer.apple.com/news/?id=06282017a )
:-P
Homebrew security is good enough for you and me but not good enough if you're working on Apple software.
Why not?