With the impending release of VS2019 (2nd April) it is planned to drop support for MSBuild15 (which ships with VS2017).

This would mean that soon after the VS2019 release, a new version of Fody would be released that requires .net 472/MSBuild16 at build time

The motivations for this change are as follows:

• Currently Fody addins are constrained in the .net runtime they can use. The current requirement for MSBuild15 support locks us in to .net4, a 4 year old runtime and SDK. Changing the minimum requirement to be MSBuild16 allows Fody addins to make use of features in newer .net versions.
• Reduce support effort by not needing to troubleshoot bugs in VS2017, msbuild15, and older versions of NuGet.
• Lowers the friction for contributors, since they do not need to install the net4 SDK.

Impact on users:

• This does not effect people using dotnet build.
• Fody will still be able to process .net assemblies on lower version
• Build/dev machines will need msbuild16 (shipped with VS2019) installed
• Users can remain on older versions of Fody until they can update to VS2019

If there are any concerns/questions/comments, please post at https://github.com/Fody/Fody/issues/679