MacRumors reports that Apple has released the golden master of iOS and iPadOS 13.4 to registered developers.

Apple Releases iOS and iPadOS 13.4 GM With New Mail Toolbar, iCloud Folder Sharing, Trackpad Support for iPad and More

Apple today released the golden master version of iOS and iPadOS 13.4, the latest major updates to the iOS 13 operating system that was released in September. The iOS and iPadOS 13.4 GMs come after a little over a month of beta testing.

  Apple Releases iOS and iPadOS 13.4 GM With New Mail Toolbar, iCloud Folder Sharing, Trackpad Support for iPad and More