"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Apple Releases First Beta of iOS 11.3 for Public Beta Testers
Beta testers who are members of Apple's beta testing program will receive the iOS 11.3 beta update over-the-air after installing the proper certificate on an iOS device.
Those who want to join the beta testing program can sign up on Apple's beta testing website, which gives users access to iOS, macOS, and tvOS betas. iOS betas are not always stable and should not be installed on a primary device.
iOS 11.3 is a significant update that introduces multiple new features like Messages on iCloud for storing your iMessages in iCloud, and ARKit 1.5, a new, upgraded version of ARKit that can more accurately map irregularly shaped surfaces and recognize and place objects on vertical surfaces like walls.
Four new Animoji are available for the iPhone X, the Health app has a new Health Records feature where you can store your medical records, and AirPlay 2 features are available in both iOS 11.3 and tvOS 11.3.
Other features new to iOS 11.3 include an Apple News "For You" section that displays the top videos of the day, Advanced Mobile Location (AML) for sharing more accurate location info when placing an emergency call in a supported country, and a new Privacy icon that will show up whenever Apple asks you for info. iBooks has also had the "i" removed from its name, so it's just "Books" now.
In the future, Apple plans to introduce more detailed information about the health of a device's battery. The update should provide a lot more data about battery health, and there will also be an option to let customers turn off the power management feature entirely, though Apple does not recommend disabling it.
Business Chat, which will let you interface with businesses like Wells Fargo, Delta, Hilton and Lowe's right in the Messages app is coming when iOS 11.3 is released, and improvements to Apple Music will bring better support for music videos.
Apple says iOS 11.3 will be released to the public in the spring.