It seems back in 2009 panasonic released some plasma TV's with a tough(er) front glass screen as shown here http://www.youtube.com/watch?v=T_MAiDnc3eg fast forward to 2013 there seems to be no mention of anything on their website or otherwise, is this tough glass no longer being used? Or is this just something on all their TVs and is no longer considered a feature and is just the norm? This is probably a question for panasonic but I thought someone here might be in the "know"