As mentioned above, https://community.openstreetmap.org/ is set up and ready for folks to join and participate.
As discussed earlier, ideally we will move off the FluxBB platform altogether (it’s not maintained anymore), archive it, and encourage folks to move over to similar topics on the new Discourse-based site.
Please check out the new forum and give feedback there. In particular, there is a thread asking for feedback about what topics we should start with: https://community.openstreetmap.org/t/welcome-to-the-forum-get-involved-in-the-next-steps-here/219.