Implemented case CPANEL-7579: Small AutoSSL text and usability improvements.
Implemented case CPANEL-7816: Scripts to install and uninstall the Let’s Encrypt AutoSSL provider.
I'm running the CURRENT release tier on my test VPS, and I've enabled and tested this.
Free SSL certificates...
KeyCDN Adds Let's Encrypt Integration - Free SSL Certificates
This is great news. I'm currently using KeyCDN with a Let's Encrypt certificate, so having the built in integration is a massive step forward :)