As a user, I like release notes that tell me new features exists that I can explore, and/or tell me which user-facing bugs were fixed, so I can try using the feature again that I’ve been avoiding.

What I absolutely hate is the generic release note that seemed to come about with agile release schedules. Notes like, “bug fixes and performance improvements”, “Thanks for using <app_name>, we make regular improvements to ensure your experience is top notch”, or “We update our app often to <insert_marketing_taglines>.”

This tells me nothing and makes me less likely to bother reading any release notes at all.