Just updated VS Mac in the alpha channel and now my Xamarin Forms PCL project does not build anymore. There seems to be a problem with XamlC in the /Xamarin.Forms.targets file.
/Users/Michael/Documents/dev/MR.Gestures/packages/Xamarin.Forms.18.104.22.1680/build/portable-win+net45+wp80+win81+wpa81/Xamarin.Forms.targets(75,4): error MSB4064: The "DebugType" parameter is not supported by the "XamlCTask" task. Verify the parameter exists on the task, and it is a settable public instance property.
/Users/Michael/Documents/dev/MR.Gestures/packages/Xamarin.Forms.22.214.171.1240/build/portable-win+net45+wp80+win81+wpa81/Xamarin.Forms.targets(69,3): error MSB4063: The "XamlCTask" task could not be initialized with its input parameters.
Done building target "XamlC" in project "MR.Gestures.csproj" -- FAILED.
Visual Studio Professional 2017 for Mac (Preview)
Version 7.3 Preview (7.3 build 708)
Version: 126.96.36.199 (Visual Studio Professional)