Release notes here
Verify the prerequisites listed in the documentation: Ubuntu 16.04 / SLES 12 / CentOS 7+ with Docker 18.09 or RHEL 7+ with Red Hat Docker 1.13, the correct kernel version and system settings, at least 8 GB RAM for each host you install on.
Install Elastic Cloud Enterprise on your first host.
Log into the Cloud UI administration console using the details provided at the end of Step 2.
Optional: Add more hosts to your Elastic Cloud Enterprise installation.