- MS has made a massive clean-up of the Win10 Feedback, now it’s just for feedbacks up to 2 weeks ago — since RTM release.
- Probably they are preparing for a new post-RTM Preview release.
A quick check of the Windows Feedback app (Start > All Apps > Windows Feedback) confirms the observation. Take a look — and while you’re there, “Upvote” anything that still concerns you. Microsoft’s removed all the comments posted before Windows 10 build 10240/RTM hit the ether.