Apple warns MacBook Pro owners about palm rest covers →

Katie Floyd:

The concern is that because Retina MacBook Pro is so thin and the tolerances are so tight, anything between the body and the top of the computer could cause it to rub against the screen. Apple warns this could cause damage to the display and presumably they’re talking about the recent reports of the anti-reflective coating coming off the display.

My 13-inch MacBook Pro with Retina display had the issue Katie links to, and Apple replaced the display clamshell assembly under warranty. I don’t use anything to cover my keyboard or palm rest, but Apple’s kbase article about tight tolerances rings true to me.