After releasing iOS 12 just yesterday to the public, Apple has already begun rolling out the first beta of iOS 12.1 for testing on the iPhone and iPad. Registered beta testers can install the update by heading over to Settings > General > Software update. From there, you’ll see the listing for the build. Just tap “Download and install” and wait for your phone or tablet to complete the process. I recommend plugging in your device beforehand so you don’t run out of power before the installation is complete.
It isn’t known just yet what iOS 12.1 will include feature-wise, but we’ll let you know when we spot any changes.