Please see https://releases.xamarin.com/preview-xcode-9-beta-3-ios-11-macos-10-13-support-preview-1/ for the details about this release, including download links and release notes.
These are early preview builds to allow Xamarin developers to start trying the new features available from Apple in Xcode 9. Any bug reports about the new Xamarin bindings are much appreciated!
File a bug report against Xamarin.Mac 3.99 if you see any suspicious behavior in this preview Xamarin.Mac version that you wish to report.
Comment in this forum thread if for example:
- You notice an error in the Release Blog post.
- You have trouble downloading one of the installer packages.
