One of the nice things that Angular has you don't see in the post is... very polite and courteous maintainers! https://github.com/angular/angular/pull/33717#issuecomment-5...
This was a fast release cycle. It was back in November 2019 we were talking about 3.7, and now it's in.
I'm not even thinking about Ivy. But it's nice to have all the nice comforts of typescript ready and working out of the box. (I mainly work in React, but dabble with angular/vue to stay up to date)
And what a smooth update process (abbreviated):
ng update @angular/cli @angular/core
** Executing migrations of package '@angular/cli' **
** Executing migrations of package '@angular/core' **
Your project has been updated to Angular version 9!
For more info, please see: https://v9.angular.io/guide/updating-to-version-9