https://istio.io/latest/news/releases/1.22.x/announcing-1.22/upgrade-notes/ https://istio.io/latest/news/releases/1.23.x/announcing-1.23/upgrade-notes/ TL;DR: Other than CRD namespaces, everything should be seamless.
https://istio.io/latest/news/releases/1.22.x/announcing-1.22/upgrade-notes/
https://istio.io/latest/news/releases/1.23.x/announcing-1.23/upgrade-notes/
TL;DR: Other than CRD namespaces, everything should be seamless.