IOS 8.1.3 devices access MacRumors from Apple's network
For the first time, MacRumors noted that an iOS 8.1.3 device was accessed on December 8, shortly after Apple released iOS 8.1.2. And then one day, they also released iOS 8.2 beta for programmers.
The amount of devices running iOS 8.1.3 accesses MacRumors from all sources
The number of devices running on iOS 8.1.3 is not much, and MacRumors cannot predict when exactly Apple will release this version. Very likely in just a few weeks. The number of users updating to iOS 8 accounts for 63%, a relatively large number and the current iOS 8.1.2 still has many silly little bugs and updating the small fixes will be quite important to help significantly increase the user experience, avoiding unnecessary errors.