update history

Author: FumingZhang

src/aks-preview/HISTORY.rst

@@ -11,13 +11,13 @@ To release a new version, please select a new version number (usually plus 1 to
 
 Pending
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+21.0.0b4
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 * `az aks nodepool add`: Add `--secondary-network-interfaces`/`--secondary-nics` (preview) to configure secondary network interfaces on agent pool nodes. Accepts inline JSON or `@file`. Property is immutable after node pool creation.
 * `az aks update`: Add `--control-plane-scaling-size` parameter to update the control plane scaling size on an existing cluster with available sizes 'H2', 'H4', and 'H8'.
 * `az aks bastion`: Fix `--subscription` not being passed to internal `az network bastion tunnel` and bastion discovery commands.
 * `az aks update`: Add `--node-disruption-policy` (preview) to update the node disruption policy for a cluster. Requires AFEC registration `Microsoft.ContainerService/NodeDisruptionProfile`. This is a cluster-level property that applies to all node pools in the cluster.
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-21.0.0b4
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 * Vendor new SDK and bump API version to 2026-04-02-preview.
 
 21.0.0b3