You Can Try the iPhone 7 iOS 10.2.1 Update Right Now
If you want to try the iPhone 7 iOS 10.2.1 update on your device right now you can.
Apple's released the iOS 10.2.1 update into its beta programs for developers and the general public. Anyone with an Apple ID can download and install the iOS 10.2.1 beta right now.
The iOS 10.2.1 beta is pretty small at this point so most of you will probably want to avoid it for the time being. There's a chance Apple adds to it as it moves forward so keep an eye out for changes as the beta progresses.
For more on the iOS 10.2.1 beta and its merits, take a look at our list of reasons to and not to install iOS 10.2.1 beta.
It'll help you get a feel for the upgrade ahead of its official release.