关于[An update to C# versions and C# tooling]的摘要:
Starting with Visual Studio 2019 Preview 4, we’ll be adjusting how C# versions are treated in .NET tooling. Firstly, we’re adding two new Language Version (LangVersion) values: LatestMajor and Preview. Here’s how they stack up with the currently supported list of values
原文地址: https://devblogs.microsoft.com/dotnet/an-update-to-c-versions-and-c-tooling/