Apple has released iPadOS 18.4 with new features, including an all-new Mail experience.The update brings on-device categorization for emails, a digest view, and new Apple Intelligence languages.Other features include added Sketch style in Image Playground, new emojis, and lossless audio support for USB-C AirPods Max.Additional features and tweaks include a Genmoji icon change, Apple News+ Food section, Ambient Music control, and Preferred Language in Apple Maps.