Don't know the answer to that, txstyle...I do like the TV and $1099 for a 60 inch, full 1080p plasma with wifi and 3D, is an amazing deal...regardless of some shortcomings (cnet says the black levels aren't as deep as the competition...frankly I don't see it, picture seems great compared to my old Sony LCD, as well as much of the competition I saw at BestBuy, and Frys...)
I'm not a huge fan of the flicker issue I mentioned earlier, but I used to be an LCD guy, so I simply didn't know that about Plasmas. Now that I researched the issue, I went back to Target, Best Buy etc, and I can tell that all plasmas flicker to some degree when displaying very bright pictures..especially when I look from the side.
All in all, I still prefer the Plasma picture even to expensive LED LCD's.. it just seems smoother and more natural over all. LCD/LEDs often seem to just scream at you in a gaudy, 'look at my crazy colors/contrast' sort of way:-) if that makes any sense.
As far as the glasses go, there are plenty of sources to get them from online vendors and ebay still..just seems strange that LG has apparently stopped making them.
Just my 2c