ne is configured to select objects with a matching <code>istio.io/rev</code> label on the namespace. Then, the upgrade process configures the pods to connect to a control plane specific to that revision. Unlike in the current model, this means that a given proxy connects to the same revision during its lifetime. This avoids subtle issues that might arise when a proxy switches what control plane it is connected to.</p><p>The new <code>istio.io/rev</code> label will replace the <code>istio-injection=enabled</