I know that not everyone uses Instagram's inbox Notes features, and there have been many questions asked as to why IG keeps pumping out Notes updates, when it seems like a minor element.
But there is a logic here: teen users have been engaging with Notes at very high rates, with teens around 10x more likely to create a Note in the app, versus other users.

And with IG losing ground as the cool app of choice among youngsters, that's music to the ears of the Meta team, which is why it keeps experimenting with new Notes options, including even more new Notes tests unearthed this week.

App researcher Alessandro Paluzzi reported that Instagram is currently testing profile Notes, and as the name would suggest, it would allow users to add Notes to your profile, which would then automatically last for three days at a time.
The mutual follows option would allow individuals to leave Notes on your profile, which would yet again serve as another outlet for communication in the application.

It's a first draft of the project and actually in view last month when the thing was called "Wonder Wall" in early tests and gave rise to many Oasis-based puns, all bad.
your profile Notes display would allow people to post a Note on your account, and which people may go check out by heading into the Notes area. Would also enable another form of light-weight engagement trigger amongst friends like inbox Notes that, as discussed above, are already seeing healthy adoption by the younger generation.
Which has curiously vexed many users, going by the discussion on social media. It has even annoyed some who just think that IG is inventing a feature they would not use, again: point here is that Notes are very popular with the young crowds, which Instagram so dearly wants to keep. At a time when there are rising tides of competition coming from TikTok and Snapchat.

If IG can keep them around by adding more Notes in more places, which will also then spark more engagement, you can bet they're going to give it a shot. And while some, possibly all of these experiments might be short-lived, Instagram has the right to try and see what works as a way to maximize engagement.

And they do add something. Notes are fun, engaging pointers that can spark in-app conversations, and clearly, they are resonating with some users.

So expect to see more Notes options in the app, and if you don't like them, don't use them. All good.