iOS 11.1 is not out yet, and Apple has already released the iOS 11.2 beta to registered developers.
How to install iOS 11.2 and how much it weighs
The update weighs about 1.2 GB and you need a developer account in the Apple Developer Program to install it.
If you really want to become a developer, then you can download a ready-made development profile and install it in 1 click.
What's new in iOS 11.2
Keep in mind, however, that HomePod is not available for testing, so Apple recommends testing Siri with headphones and an iPhone or iPad to see how your app will perform.
Yes, yes, the one that led to strange results when entering numbers quickly
This means that promised direct payments between users using Apple Pay are just around the corner.
Is it worth updating
Definitely worth it for the sake of SiriKit for HomePod.
HomePod apps are going to be trending soon (but that's not certain), so it's best to start developing them early.
The Topic of Article: IOS 11.2 beta released.