Nothing yet. I immediately reached out for feedback and filled out a request. When I was asking about feedback though they told me that technically I hadn't been rejected yet so it would probably be a long time before I heard anything back, and even longer since so many other people before me who aren't on the waitlist have already requested feedback. That was quite a while ago and I still have not even received receipt of my feedback request, so have sent a follow up email to make sure it doesn't get lost. But, I am super eager to submit my app and don't wanna wait much longer, so currently debating if it is worth waiting for feedback before submitting..