Apple did not mention it in the keynote, but iOS 9 also comes with a much-anticipated novelty and, incidentally, foreseen in the concept that we published yesterday here on the site. a new application for the iCloud Drive.
With it, iCloud users will now have a tool dedicated to managing their files and folders stored in the cloud. Now, if we could already do this through the Finder on OS X, Apple needed to offer a similar environment on iOS.

The app has built-in search and also tells you how much space you have free on iCloud.
But this is also very curious:

In iCloud Drive Settings, Apple allows users to hide the new Home Screen app (Home Screen). The good news is that this is something we have long dreamed of; the hand that, for now, only appears for iCloud Drive.
Since we can't just delete native iOS apps, at least hiding them helps a lot.
(via MacRumors)