@hasty sun announcements can only be done by moderators and users involved with Godot communications. We do have a role for that, but it's an internal role that is given manually. Members of the Godot communications team can get this role to post announcements like new releases or events.
#Announcements role
slow breach
Users can post their own projects in #1055700111562379296 for in-progress stuff, and in #1055700861390692442 for finished and released projects