iOS 11.3 preview doesn't include any iPad specific features
(The iPad Guide)

Apple on Tuesday released a preview of iOS 11.3. The software update is set to come with all kinds of new features, like 4 new Animoji for the iPhone X, ARkit 1.5 for developers and more. There are no iPad-only features listed in the preview, but being this is a major release there may be a few included closer to launch, although it is doubtful. Tags: NewsiOS 11.3