IIS 10 setup in Windows Server 2016

I am adding IIS role to windows Server 2016.  the server comes with .net framework version 4.7.2 .  In the adding role wizard, it shows ASP.NET 4.6 option available.  I also have windows 10 machine. It has .net framework 4.7.2 installed separately. When I add IIS role, it shows ASP.NET 4.7 option in the adding role wizard.  I would like to understanding what different between ASP.NET 4.6 and 4.7. Is  this OS related?  Thanks.