I was going to clean my screen for the first time in 3 months, and decided to check it. There are some smal scratchs and a large one, superficial, but there.. I wonder if it is ease to scratch.
My 2009 Macbook Pro has zero scratches and I clean it with no care at all.
ifixit calls it a glass panel for the 2013. Apple called it a glass panel on the warranty paperwork for my 2009 iMac from when Apple replaced the display a couple of years ago. However, neither states what type of glass it is.
The video is at the link below. Yes, indeed, Apple uses Gorilla glass. Watch the whole video, especially the comments near the end (starting minute 5:06). Also starting minute 0:30.