I have spent the better part of a few hours trying to find a way to auto-increment versions in a .NETCoreApp 1.1 (Visual Studio 2017).
I know the the AssemblyInfo.cs
These values are now set in the .csproj file:
netcoreapp1.1
1.0.6.0
1.0.6.0
1.0.1
These are the same values you see if you go in the Package tab in the project settings. While I don't think you can use * to autoincrement the version, what you can do is introduce a post-processing step that replaces the versions for you (e.g. as part of your continuous integration).