Last week, Apple released the very first beta version of iOS 11.2. One week later, the second update has arrived.
iOS 11.2 beta 2 is now available to registered developers. You can grab it by going to Settings > General > Software Update on your enrolled device, or by going to Apple's Developer Center.
The update to iOS 11.2 includes bug fixes and other small improvements. Included is a fix for a bug in the Calculator app that would display an answer other than 6 when you quickly type 1+2+3. Also included is a Now Playing method of controlling content on Apple TV from Control Center, a redesigned camera emoji, and a new loading animation for Live Photos effects.
Apple today also released watchOS 4.2 beta 2 for the Apple Watch.
There's no word on when these updates will go live for the public.