"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Apple Seeds Second Beta of iOS 12.1.1 to Developers [Update: Public Beta Available]
Registered developers can download the new iOS 12.1.1 beta from Apple's Developer Center or over-the-air once the proper configuration profile has been installed from the Developer Center.
The iOS 12.1.1 update reintroduces the feature that lets you take a Live Photo while on a FaceTime call, and it brings improvements for the FaceTime user interface.
Following the update, FaceTime features a reworked bottom bar that includes quick access buttons for muting a call and flipping the camera. Sliding up on the bottom bar brings up additional options with conversation participants. Previously, FaceTime users were required to tap on three dots to access a secondary menu with these features.
For the iPhone XR, iOS 12.1.1 allows Haptic Touch to be used to expand notifications on the Lock screen. iPhone XR owners are able to long press on a notification banner to see additional content, much as other iPhone owners can 3D Touch on a notification to expand it.
iOS 12.1.1 also adds a new option in Apple News to hide the side bar on the iPad when using the app in landscape mode, it introduces an option to turn off the physical SIM in the device in favor of the eSIM, and it tweaks the icon of the Apple Watch app so it looks like the Apple Watch Series 4.
Update: Apple has made a new beta of iOS 12.1.1 available to public beta testers.