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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 available Application Network versions along with their compatible Azure Kubernetes Service (AKS) versions.
Supported Application Network versions and compatible AKS versions
The following table outlines available Azure Kubernetes Application Network versions, their corresponding Istio versions, end-of-life dates, and compatible AKS versions:
| Application Network version | Istio version | End of life | Compatible AKS versions |
|---|---|---|---|
| 1.1 | 1.26 | April 2026 | 1.30, 1.31, 1.32, 1.33, 1.34 |
| 1.2 | 1.27 | ~May 2026 (expected) | 1.30, 1.31, 1.32, 1.33, 1.34, 1.35 |
| 1.3 | 1.28 | ~Aug 2026 (expected) | 1.30, 1.31, 1.32, 1.33, 1.34, 1.35 |
| 1.4 | 1.29 | ~Sep 2026 (expected) | 1.31, 1.32, 1.33, 1.34, 1.35 |
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. 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.