I wouldn't be so sure about the app clip getting an update. If the user launched the app clip again, maybe it would get the latest. The language around it staying on your device for 30 days to me feels like it wouldn't auto update.
I would create a feedback for this and ask for clarifying documentation in the App Clip Framework or App Store Connect. Out of curiosity, is the update just to get them new features, or is the old version of the app clip no longer compatible with the backend?
Topic:
App & System Services
SubTopic:
General
Tags: