In Xcode 8.3 you can only create a Storyboard project. To get a xib-based one, one needs to follow the instructions [here](https://forums.macrumors.com/threads/xcode-8-3-storyboard-only.2039369/), and then command-drag File's Owner onto the new-created App Delegate.
In Xcode 8.3 you can only create a Storyboard project.
To get a xib-based one, one needs to follow the instructions here, and then command-drag File's Owner onto the new-created App Delegate.