It seems that the changes in e27ac3b cause the binaries from the urdfdom package to end up in /opt/ros/hydro/bin, instead of where they were previously installed (/opt/ros/hydro/share/urdfdom?). This makes rosrun urdfdom .. fail with:

[rosrun] Couldn't find executable named check_urdf below /opt/ros/hydro/share/urdf

Was this intended? Then we should probably also update the tutorials.