Yesterday I noticed a release (VS 2017 Update 6) was released, but my Visual Studio was still running Update 3:
The newest update is version 15.6.
While reading how to update Visual Studio, the article mentioned Visual Studio Installer.
https://docs.microsoft.com/en-us/visualstudio/install/update-visual-studio
So I launched Visual Studio Installer and clicked “Update“. Note, the installer did not tell me what version will be installed, but I knew the latest GA release update is 15.6 (VS current release version https://docs.microsoft.com/en-us/visualstudio/releasenotes/vs2017-relnotes)
Now my Visual Studio shows version 15.6, which is the latest current release:
Microsoft Visual Studio Enterprise 2017 (3)
Version 15.6.0
VisualStudio.15.Release/15.6.0+27428.1
Microsoft .NET Framework
Version 4.7.02556
Installed Version: Enterprise
All done!