Visual Studio 2019 msbuild directory “Current” instead of “15.0”

I installed the Visual Studio 2019 in my working machine and I noticed the following:

With Visual Studio 2017, the msbuild.exe path is:

C:\Program Files (x86)\Microsoft Visual Studio17\Professional\MSBuild.0\Bin

With Visual Studio 2019, the msbuild.exe path is:

C:\Program Files (x86)\Microsoft Visual Studio19\Enterprise\MSBuild\Current\Bin

There is also a directory with version 15.0, but mine is empty

C:\Program Files (x86)\Microsoft Visual Studio19\Enterprise\MSBuild.0\Bin

What is the goal to use the “Current” folder instead of “15.0”?

Thanks.