We incorporated Joomla Roadmap meetings as part of the J and Beyond conference held in Germany recently. The Joomla Roadmap meetings are part of an effort to help organize and encourage the efforts of volunteers and to move Joomla development in directions where the community wants to go. Thanks to the coordinators and volunteers whose work makes this a success!
Each of the groups comes together as a Production Working Group. You can find more information on the groups at https://docs.joomla.org/Production_Working_Groups including how you can join the effort.