From Apple (News 09012016a)
A Message to the Apple Community in Europe.
WWDC 2016 Keynote.
At 10 A.M PDT you could watch the WWDC2016 Keynote.
The future would be macOS during the next WWDC ?
Mac OS 9 > Mac OS X > OS X > macOS ?
The OS X El Capitan v10.11.4 Update improves the stability, compatibility, and security of your Mac, and is recommended for all users.