Joomla 3.8.4 is here - a security and bug fixes release!
The Joomla project team has released version 3.8.4 a security release (4 low priority vulnerabilities addressed) that also contains over 100 bug fixes and improvements.
Community Builder 2.1.3 (latest build) and all Joomlapolis add-ons work just fine with Joomla 3.8.4.
This is a recommended upgrade for all Joomla 3.x series sites. As always, before any Joomla upgrade on your live website, take a backup just in case anything goes wrong.
You can learn more about these security issues, bug fixes and the improvements by reading the Joomla 3.8.4 announcement.