Paste on another' - I would rather this be manually trigged and not automatic. Marketing slogans are from Apple's macOS page. There are a myriad of articles expounding the latest and greatest in Sierra, but my list is only the negatives. Still, macOS is a better name than OS X (can you say OS 10 10.X instead?)
And yes, dear eagle-eyed reader, Apple capitalizes the Mac in MacBook but not the Mac in macOS - what a confusing naming (lack-of-)convention.
I've updated my MacBook to macOS Sierra, and it's rather underwhelming and half-hearted IMHO.