Update: All servers we manage that had patches available have now been patched including all cPanel and Domain of One's Own servers. We continue to wait for a patch for Ubuntu servers to finalize the patching of our fleet however this represents a very small portion of our server infrastructure. All sites are online.
Previously: After testing releases of CentOS 6, 7 and CloudLinux across our development environment we are implementing patches for Meltdown and Spectre across all servers. Please expect a short amount of downtime due to necessary reboot.