ROS is not going to import arm versions of Gazebo11 for the following reasons:
Gazebo11 is going to be replaced by then new Gazebo, migration is recommended as soon as possible and the efforts will be focused in the new version.
The version in the PPA is not exactly the same than in Ubuntu since it needed some custom patches since some of its dependencies were not available on Ubuntu Jammy.
The packages in the PPA can be used without any guarantee, they probably will work as expected but there is no official support for them. If you are using ROS for gazebo_ros_pkgs, there won't be packages for arm64 or amrhf but you can use the PPA to build them from source using a colcon/catkin workspace easily.
Closes: https://github.com/gazebosim/gazebo-classic/issues/3236
ROS is not going to import arm versions of Gazebo11 for the following reasons:
The packages in the PPA can be used without any guarantee, they probably will work as expected but there is no official support for them. If you are using ROS for
gazebo_ros_pkgs, there won't be packages for arm64 or amrhf but you can use the PPA to build them from source using a colcon/catkin workspace easily.