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Important
AKS preview features are available on a self-service, opt-in basis. Previews are provided "as is" and "as available," and they're excluded from the service-level agreements and limited warranty. AKS previews are partially covered by customer support on a best-effort basis. As such, these features aren't meant for production use. For more information, see the following support articles:
Azure Kubernetes Application Network releases minor versions roughly once a quarter. Minor version releases include new features, improvements, and component updates. Each minor version has a specific Istio minor version built in, though consecutive Application Network versions might share the same Istio version. Patch releases include fixes for bugs and security vulnerabilities.
This article lists Application Network versions, their support lifecycle, and their compatible Azure Kubernetes Service (AKS) versions.
Supported Application Network versions and compatible AKS versions
The following table lists Azure Kubernetes Application Network versions, their corresponding Istio versions, end-of-life information, compatible AKS versions, and fully managed release channels. Recently retired versions remain in the table for reference and are no longer supported. Version availability and release-channel mappings vary by region and AKS version. Check available versions in your region before onboarding or planning an upgrade.
| Application Network version | Istio version | End of life | Compatible AKS versions | Fully managed release channel |
|---|---|---|---|---|
| 1.1 (retired) | 1.26 | April 2026 | 1.30, 1.31, 1.32, 1.33, 1.34 | None |
| 1.2 (retired) | 1.27 | May 2026 | 1.30, 1.31, 1.32, 1.33, 1.34, 1.35 | None |
| 1.3 (retired) | 1.28 | Sept 2026 | 1.30, 1.31, 1.32, 1.33, 1.34, 1.35 | None |
| 1.4 | 1.29 | Not confirmed | 1.31, 1.32, 1.33, 1.34, 1.35, 1.36 | None |
| 1.5 | 1.30 | ~Dec 2026 (expected) | 1.32, 1.33, 1.34, 1.35, 1.36, 1.37 | Stable |
| 1.6 | 1.31 | Not confirmed | 1.32, 1.33, 1.34, 1.35, 1.36, 1.37 | Rapid |
End-of-life dates marked expected are estimates of earliest possible retirement, not confirmed dates.
SelfManaged mode offers two or three supported Application Network versions at a time. An individual member might have fewer compatible versions available, depending on its AKS version and region.
FullyManaged mode uses the Rapid and Stable release channels instead of selecting a version directly. The channels offer two supported versions when they target different versions, or one when they target the same version. A channel is available to a member only if its target version is compatible with the member's AKS version.
Important
Application Network doesn't manage upgrades of your AKS cluster. To remain in support, select a compatible version during onboarding and upgrade it regularly to maintain compatibility with Application Network. Compatibility with Application Network doesn't extend the AKS version's support lifecycle. Refer to the AKS Kubernetes release calendar for AKS version end-of-life dates.
List available versions in your region
List the available versions in your region using the
az appnet list-versionscommand.az appnet list-versions --location $LOCATION -o tableYou can also use the
az appnet list-versionscommand to check which version each release channel corresponds to for Azure Kubernetes Application Network members enrolled inFullyManagedupgrade mode.
Related content
For more information about Application Network version selection or keeping your member automatically up-to-date, see Configure upgrades for Azure Kubernetes Application Network members.
For release and retirement announcements, see the Application Network release notes.