This is indeed a rather misleading claim. 4.2 GM fails to find my perfectly functional wifi printer on the same network. No problem printing from all other devices, and indeed from third-party printing apps on iPad. Why oh why can Apple not make this work? SMH.
As with the change to the rotation lock switch, I'm not looking forward to explaining this to my dear old mother when she plugs in her iPad and it gets updated.
"Why does the print button in all my programs not work? You said when it updated printing would be possible."
"Why doesn't the switch work anymore, the one that stops the screen from turning?"
"Oh. Why does it show a picture like it's turned off the sound but the sound doesn't turn off?"