Is .app domain no needs to have a sepearte SSL certificate

I am a newbie in web development, i heard about .app domains from google with builtin https security.

IS .app domain no needs to have a sepearate ssl certificate since it is builtin and all request are https by default.

https://techcrunch.com/2018/05/01/google-is-launching-app-domains-the-first-tlds-secured-with-built-in-https/