It doesn't come up as an option in the current latest release version of Visual Studio 2019 (v 16.0.3), but ,NET 4.8 (as opposed to 4.72) has apparently been available since 18 April 2019.  See https://docs.microsoft.com/en-us/dotnet/framework/whats-new/index#v48.

From that page:

NET Framework 4.8 builds on previous versions of the .NET Framework 4.x by adding many new fixes and several new features while remaining a very stable product.