The Ubuntu bionic package is stuck at ros_comm 1.4.1, and some stability fixes were only released in ros_comm 1.4.4. Are there ever plans to update ros_comm past 1.4.1 in Noetic for Ubuntu bionic?

ROS Noetic is only available for Ubuntu Focal. Did you mean ROS Melodic? If so, I would recommend opening an issue asking for a new Melodic release. If you really mean ROS Noetic and Ubuntu Focal, then I would recommend commenting on this existing issue asking for a new ros_comm release in ROS Noetic.