Originally Posted by
kilofoxtrot Its on the homepage of the App Store. I am downloading now. I don't think it will show up in Updates.
I downloaded from here and it seems to have installed fine on my mid-2011 Air 11". With a couple of caveats -
About this Mac acknowledges it is indeed running
macOS Sierra, though
Storage takes some time in sorting out the graphic interpretation of the Mac Drive - and revisiting the
App Store, the installation does not show up in 'Purchased' or 'Updates'(as installed). No idea why.