The Community-Developed Feature Tracker has moved into the qubes-issues issue tracker!
All of the issues that used to be tracked here are now conveniently available by viewing all open community-dev issues.
You can see the status of each issue by looking at the S: (status) labels.
For example:
(You can read a more detailed description of each of these statuses by hovering over the label in GitHub.)
At the top of each issue, you can also find relevant information, like the Community Dev who is working on that issue, a link to the PoC (if any), and a link to the Discussion thread.