An update for template pack ... is available

[tmds]

I have .NET Core 3.1 installed, when I create a new console application a banner shows up:

An update for template pack Microsoft.DotNet.Common.ProjectTemplates.3.1::3.1.5 is available.
    install command: dotnet new -i Microsoft.DotNet.Common.ProjectTemplates.3.1::5.0.0

Does it make sense this banner shows up for me? Is it important I install this update?
Why aren't updates to the template packs delivered as part of the sdk patch releases?

cc @KathleenDollard