88% of iOS 9-ready devices now have it installed, says Apple

With iOS 10 likely to be rolled out during the coming week's big event or shortly thereafter, Apple will surely be hoping for a repeat of iOS 9's impressive adoption rate. While the 9-in-10 stat is laudable at any point, Apple reported a 50 percent uptake of iOS 9 by the end of its September 2015 launch month — the fastest rate of iOS adoption in the firm's history. Then in November just after iOS 9.1 dropped, Cupertino reported that 66 percent of those wielding iOS 9-ready devices had taken the plunge.
As aforementioned, iOS 10 will likely succeed the current version at some point this month. Therein, users can expect a new dark mode, bumped security, more emoji and other treats, along with the customary dose of bug fixes and general performance tweaks.
Things that are NOT allowed: