This document explains the cPanel & WHM version system and release process.
We publish new releases of cPanel DNSONLY™ concurrently with new releases of cPanel & WHM, and they share the same release tier. Server owners can update their DNSONLY servers when they update their cPanel & WHM servers.
A cPanel & WHM version number consists of three incremented integer values. Periods (
.) separate each value.
Each value in a cPanel & WHM version number represents specific information:
As of cPanel & WHM version 54, the user interface no longer includes the parent value in the version number. However, most internal processes, such as configuration files, API functions, and RPM files, will continue to use the parent version number.
We release cPanel & WHM through four publicly-available tiers. This protection scheme allows us to rapidly develop and publish new releases of cPanel & WHM. Server owners can select a cPanel & WHM tier that reflects the degree to which they value stability, new features, or update frequency from the Release Tier menu in WHM's Update Preferences interface (WHM >> Home >> Server Configuration > Update Preferences).
|LTS||Long-Term Support. If you do not wish to upgrade cPanel & WHM, you can select a cPanel & WHM version for as long as cPanel supports it.||Not applicable.|
|STABLE||This version has received considerable public exposure, testing, and verification.||Published least frequently.|
|RELEASE||This version is feature-complete and well tested. It contains all intended features and functionality. New installations default to RELEASE.||Published more frequently than STABLE.|
|CURRENT||This version is tested and verified, but it may not contain all of the proposed functionality of a release. This tier is similar to the "release candidate" tier used under other publication schemes.||Published more frequently than RELEASE.|
This version only has rudimentary testing. The features are subject to further modification. This version usually lacks official public documentation.
|Published most frequently (up to several times per week).|
Some server owners need to deploy a specific version of cPanel & WHM to new installations, even when that version is no longer the current production release.
etc/cpanel/TIERS.json file contains a JSON file structure to indicate Long-Term Support. As of cPanel & WHM version 62, we use this structure for all release cycles.
For more information, read our The Long-Term Support JSON File documentation.
When a version of cPanel & WHM no longer exists in any release tier and reaches End of Life (EOL), we can no longer guarantee support for that version of software. Also, we will no longer release security updates and bug fixes for that version.
For information on EOL for third-party software that we ship with cPanel & WHM or operating systems that cPanel & WHM runs on, read our Third-Party Software End Of Life Policy documentation.
We release versions of cPanel & WHM simultaneously across several architectures. In addition, we may publish several releases across different tiers on the same day.
Whenever possible, we do not release new versions on international holidays and weekends (Thursday evening through Sunday afternoon).
In addition to everything in the previous production release, development releases of cPanel & WHM contain one or more changes from new projects for the next planned production release.
As of 2016, our goal is to complete at least four production releases each year with the following schedule:
Production releases use the following process:
We publish the release to the development tiers, and to the EDGE, CURRENT, and RELEASE tiers.
At this point, except for critical security issues, we no longer develop or publish any changes to the previous releases.