This is the first point-four update for iOS software in years, as the last one actually happened with iOS 8 in 2014. Then Apple introduced Apple Music for iOS, which was a pretty big announcement, so major features for this upcoming update are also not mutually exclusive. Usually Apple limits itself to fewer than five point updates, so iOS 11.4 is also expected to be the last big iOS 11 update before the big announcement of iOS 12, which traditionally takes place in the summer, takes place.
With all this in mind, new features are actually coming to iOS 1
Officially Approved: ClassKit
Expected: AirPlay 2
Expected: News on iCloud
News on iCloud was another feature that landed some expected in iOS 11.3, but it did not, which of course pushes expectations that Apple will introduce it in iOS 11.4.
News on iCloud is as simple and direct as it sounds: the ability for iMessage to save e conversations and attachments online. The big advantage of this feature is that when you switch to a new device, you get all your chat history and files. This is a feature that many other messaging services support, but Apple will clearly want to ensure that your chat history is properly protected, and that could be one reason why the company is busy.
iOS 11.4 Release Date
We expect Apple to release beta versions of the iOS 11.4 software in the near future, while the final public version of the iOS 11.4 update is likely to come in a few months.