Actually, I spoke with several techs, who told me not even to think about screwing with trying to replace the glass. I'm actually looking for the procedure of replacing the entire display unit, which I'm told is not all that difficult. There's one on youtube, which I just found, but it's not very detailed. It looks pretty straightforward, but the display assemblies are about $400. Better than the $650 that apple quoted me.
I'm finished with apple after this machine dies. I'm sick of their move toward irreplaceable/unrepairable/non-upgradeable laptops. There's absolutely no reason to make the display irreparable, if not to force consumers to buy a new machine. The glass on previous MacBooks would have cost less than $100 to have replaced, instead I have to replace the entire display, which would cost almost half of the original price of the whole machine.
That's not even to mention the soldered-in ram, glued-in hard drives and SSDs, etc. I'm a design engineer in a different, but related field. There's no reason for what they're doing, other than to force a new purchase. I love macs, but I'm done.