The Xcode 16.2 RC image has been released and can be selected as follows:
macos:
xcode: 16.2.0
Xcode 16.2 RC Release Notes | Apple Developer Documentation
Apple Silicon VM Image Info
Xcode 16.2 RC Build version 16C5031c
is installed at /Applications/Xcode-16.2.app
The full manifest of installed software can be found here