Xcode not supported for iOS 11.3 by Xcode 9.2 needed 9.3

Question

Apparently, with the latest IOS update, my version of Xcode could not build due to the following error.

Could not locate device support files. This iPhone

Answer 1

I just give you a device support file for iOS 11.4 (15F79). which just on XCode version 9.4 (9F1027a)

Updated on 5 Oct 2018:

• Xcode 10.0 (10A255) - iOS 12.0 (16A366) [Updated 21 Sep: @Nik Burns confirmed that works]
• Xcode 10.1 beta 2 (10O35n) - iOS 12.1 (16B5068g) [Please give me feedback if that works]