The good news: Gatekeeper should be more protective. The bad news: old installers may well be unusable. Bah!
macOS
Why is the new Apple File System called APFS? And what does it all mean? Decoding WWDC.
macOS Sierra it is then – but why did Apple choose those names?
Already, it is being rumoured that this summer, Apple will change the name of OS X to macOS. Is this just for consistency?
The Eclectic Light Company 