So updated both our MacBook Pro & MacBook Air to macOS Sierra as soon as it was available. Will be discovering new features gradually over the weeks.
I have been collecting OSX installer files ever since I switched to Macs. Now my collection looks like this:
The trick to get these installer files is to go to “Applications” folder right after download is complete and find, copy the installer file to another spot on your computer, because as soon as installation is done this file gets deleted from Applications folder. It also comes in handy if you have multiple machines to update without repeated download.