Supported Releases

This page lists the status, timeline and policy for currently supported releases. Supported releases of Istio include releases that are in the active maintenance window and are patched for security and bug fixes. Subsequent patch releases on a minor release do not contain backward incompatible changes.

• Support Policy
• Naming scheme
• Support status of Istio releases
• Releases without known Common Vulnerabilities and Exposures (CVEs)

Support policy

We produce new builds of Istio for each commit. Around once a quarter, we build a minor release and run through several additional tests as well as release qualification. We release patch versions for issues found in minor releases.

The various types of releases represent a different product quality level and level of assistance from the Istio community. In this context, support means that the community will produce patch releases for critical issues and offer technical assistance. Separately, 3rd parties and partners may offer longer-term support solutions.

You can find available releases on the releases page, and if you’re the adventurous type, you can learn about our development builds on the development builds wiki. You can find high-level releases notes for each minor and patch release here.

Naming scheme

Our naming scheme is as follows:

<major>.<minor>.<patch>

where <minor> is increased for each release, and <patch> counts the number of patches for the current <minor> release. A patch is usually a small change relative to the <minor> release.

Support status of Istio releases

Kubernetes 1.22 removed some deprecated APIs and as a result versions of Istio prior to 1.10.0 will no longer work. If you are upgrading your Kubernetes version, make sure that your Istio version is still supported.

Supported releases without known Common Vulnerabilities and Exposures (CVEs)

Istio does not guarantee that minor releases that fall outside the support window have all known CVEs patched. Please keep up-to-date and use a supported version.