It was in the iOS 8 beta too. I remember submitting a bug about landscape quick reply from it. I like having an easy way to submit bugs as the site version hasn't been updated with a new UI.
Yeah, the Public Beta has always had the feedback app. Which started with iOS 8.3
But what I meant was that there was a brief time in iOS 9 where the latest build wasn't updated in the feedback app right away. Sometimes it took a day or a few. Since it mysteriously showed up updating to beta 2 of the developer, it might not update the build you submit the feedback for until the Public Beta comes out. Because it's really strange that the app would show up on an iOS update when the feedback app itself it tied to the beta Profile and not iOS.