Apple has released the second release candidate versions of iOS 18.4 and iPadOS 18.4 for developers.iOS 18.4 brings Priority Notifications Apple Intelligence, a new Apple News+ Food section, and Sketch style to Image Playground.There are new emoji characters, a Vision Pro app for Vision Pro owners, Mail Categorization on iPad, and Ambient Music feature.Apple Vision Pro app helps discover new content and spatial experiences for Vision Pro users.The update includes recipe publishers' recipes on Apple News+, a Food section with kitchen tips, and cooking mode.Photos app enhancements include new filters, reorder items feature, and more sorting options.Other enhancements involve Safari search suggestions, Screen Time App Limits, widgets for Podcasts, and Apple Fitness+ Collections.Ambient Music allows instant music play from Control Center, and support for more languages and Matter-compatible robot vacuum cleaners.iOS 18.4 and iPadOS 18.4 may be released in early April, potentially next week.The updates bring various new features and bug fixes to improve the overall user experience.