iPhone XR users can expand notifications with Haptic Touch in iOS 12.1.1, report says
https://www.cnet.com/news/iphone-xr-users-can-expand-notifications-with-haptic-touch-in-ios-12-1-1-report-says/
The long-press feature reportedly won't be available on the iPhone 6 or older models.
iOS 12.1.1 is currently in beta testing.