Smart Rules being available 4 months ago was an opt-in beta wasn’t it? I don’t think there’s any expectation for that to be in release notes.
But it would have been useful to include when it was fully released last week. Presumably lots of your users who don’t follow you on social media and don’t use this community still won’t know about it.
Personally I don’t have automatic updates on and I always look at the release notes. Granted most notes are waffle but I think it’s a missed opportunity to keep users in with what is happening with the app.
I use automatic updates. So don’t check the release notes every time an app is updated but if I notice something has suddenly changed I go to release notes to see what was done. I think this is the greatest benefit of release notes.
For apps I use a lot I also periodically scan recent release notes.
I think a problem with using in-app push notifications in Emma for quasi release notes is they’re not archived. Once you dismiss them they’re gone.