Samples targeting for .NET Core 3.0

Hi, Microsoft announced [general availability of .NET Core 3](https://github.com/dotnet/core/blob/master/release-notes/3.0/3.0.0/3.0.0.md) on September and described it as the future of .NET and Visual Studio 2019 being the newest version of the IDE. Will these source code samples be upgraded to target the latest version before the book is released?

It would be a shame if the code samples are broken on the new version of .NET since it has succeeded 2.1

Thanks