Oh boy... and so it begins...
This is welcomed and expected, my only curiosity is that development on next MacOS/iOS surely switched into high gear 3-4 months ago (and likely had finalized the feature set well before that). I'm surprised they would completely change the feature set when WWDC is about 4 months away....
My point is that high Sierra was already supposed to be a maintenance release. Mac still doesn’t have feature parity with iOS, for God’s sakes.