When an extension Upgrade button appears it's not clear for what enhancements should be anticipated.
Let the extension developers to provide information about each version and display it next to the Upgrade button so the extensions users will understand what features and bug fixes the upgrade brings.
Thanks @Andrey_Osadchuk to raising this idea.
it's very difficult to know what the upgrade has coming up with that respective extension? so it would be really good if extension developers provide the release notes with upgrades for each new version on adobe exchange app marketplace.