Received my MacBook Pro 15" with Touch Bar last Wednesday and when I went to clean off the screen today, I've noticed that there is a long hairline crack under the glass that you can only notice in certain light... Taking a flashlight and shining it on the LCD definitely brings it out. You can really clearly see it at the 1:03 in the video below: Going to take it into the Apple Store this weekend to see if they can replace the top assembly. There is no way that anything I did to it in the past week could have caused the crack. Possible that it happened in shipping, but I wanted to post here in case others are experiencing similar issues. I only noticed because I happened to be cleaning the screen with an overhead light.