Microsoft Azure CLI 2.89.0 aflaai

ACR
- az acr import: Fix regional endpoint source resolution for multi-label sovereign suffixes
- az acr create/update: Add new parameter --writable-cache-repo to enable writable behavior for cache repositories within a registry

AKS
- az aks upgrade: Skip Machines mode agent pools during node image and Kubernetes version upgrade
- az aks identity-binding: Add command group to manage identity bindings (trust domain) for a managed cluster
- az aks update: Fix --outbound-type validation for userDefinedRouting and userAssignedNATGateway so BYO VNet clusters no longer require --vnet-subnet-id and managed VNet clusters get a clear error message
- az aks nodepool rollback: Fix false auto-upgrade warning when upgrade channels are disabled
- Vendor new SDK and bump API version to 2026-05-01

App Config
- Update CLI to use Audience and update to 1.8.0
- az appconfig: Increase retry resilience for data-plane operations to better handle transient server throttling (HTTP 429) and network errors

App Service
- az appservice plan: Remove preview flag for managed instance app service plans
- az appservice plan: Add Premium V3 SKU support (P0V3, P1-3V3, P1-5MV3) for managed instances
- az webapp troubleshoot status: Provide latest application startup attempt data

ARM
- az stack-whatif group/sub/mg: Add deployment stacks what-if commands

Backup
- Add support for cost management settings

Cognitive Services
- az cognitiveservices account compute: Support compute cluster resources management

Compute
- az vmss application set: Fix command silently failing to set gallery applications and remove leftover debug output

CosmosDB
- az cosmosdb: Revert API version from 2026-03-15 back to 2025-10-15

MySQL
- az mysql flexible-server mirroring: Add enable and disable commands to support Fabric Mirroring

MySQL Flexible Server
- az mysql flexible-server update: Add --maintenance-batch to set the batch (Default, Batch1, Batch2) of the custom-managed maintenance window; existing batch is preserved when omitted

NetAppFiles
- az netappfiles volume create: Add --breakthrough-mode to specify whether the volume operates in Breakthrough Mode

Network
- az network nat gateway: Add --nat64 to enable/disable NAT64 on StandardV2 NAT gateway
- az network private-endpoint-connection: Update provider Microsoft.HardwareSecurityModules/cloudHsmClusters
- az network virtual-appliance migration: Support migrating NVA to ILB architecture

PostgreSQL
- az postgres flexible-server backup create: Fix duplicate auto-generated backup names after deletions
- az postgres flexible-server create: Add example to create elastic cluster with custom database name
- az postgres flexible-server upgrade: Introduced --validate-only param for PVC