The development team elementary OS has started testing for the upcoming elementary OS 6 release.
There are many new features planned for it version 6, such as support for multi-touch and improved synchronization of objects such as mail and calendar information. 
“Important updates for the communication and organization applications, relying on the Evolution data server back-end. It's still in the early stages and currently requires an Evolution account until Online development is complete Showcase, but thanks in large part to the work done by Corentin Noël.
These updates allow you to synchronize mail, calendar events, etc. in related applications with a wider variety of account providers. ”
The operating system development team reports that it has created a new website hosting elementary OS 6 Early Access Builds to ensure that OEMs, developers, testers, supporters, and distribution friends can get the updates before traffic.
More details can be found in the post made at blog of distribution.
