iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
iOS 7.1 Adoption at 6% 24 Hours After Release
The adoption rates are similar to those of iOS 7.0.6, which offered a critical security fix and was installed on 13.3 percent of iOS devices 48 hours after release and 25 percent of devices after four days.
As with most minor version updates, iOS 7.1 adoption rates have been less dramatic than those of its major-version counterparts. In the 24 hours following the operating system's public release, iOS 7.1 users generated 5.9% of total North American iOS Web traffic.iOS 7.1 offers CarPlay support, Touch ID improvements, bug fixes, and several visual tweaks for iOS, including revamped shift and caps locks keys for the keyboard, refined icons for the Phone, FaceTime, and Messages apps, and a redesign for several aspects of the Phone dialer and shutdown screen.
Beyond iOS 7.1, iOS 7 users generated more than 80 percent of all iOS web traffic over the three days Chitika measured, a number that has remained steady since the company's previous February 26 study.
Chitika's overall iOS 7 usage numbers in North America are in line with reports from Apple's App Store support page for developers, which indicates 83 percent of all iOS devices have iOS 7 installed as of March 9, 2014.