Apple has released iOS 12.1.1, which is now rolling out to compatible devices. The update was around 377MB on our iPhone XR but the exact size will vary with device. It's available to download OTA or via iTunes. iOS 12.1.1 brings only minor improvements and some bug fixes. One of the additions is support for additional carriers on dual SIM iPhones. Basically, more carriers now support being able to add their network as an eSIM on compatible iPhones. iOS 12.1.1 change log The iPhone XR also gets the ability to expand notifications using haptic touch. This previously only worked...
Source: https://www.gsmarena.com/ios_1211_released_with_expanded_esim_carrier_support-news-34570.php