The number of iOS 8 installations continues its upward march towards the 80 percent threshold. This magic number represents the iOS 7 adoption rate at roughly this time last year. While iOS 8 lags slightly behind according to Apple's Developer page, other reports show that the 80 percent level has already been reached.
In any case, iOS 8.2 was released on March 9 and is the first version to include Apple Watch support. In addition to stability enhancements and bug fixes, iOS 8.2 also includes several improvements to the Health App. iOS devices still running iOS 7 has dropped to 20 percent, with older versions comprising just 3 percent of the total. As always, these statistics from Apple only include devices compatible with iOS 8.