The Panasonic VIERA TC-L47E50 is available again from Amazon. There is not any explanation as to why it was pulled for a few days.
I cannot find a description on Amazon of the delivery methods, but I did create a few different orders, aborting at the last step, to see if the shipping options change. It looks like 50" and above get the white glove delivery. So, the 42" and 47" would just be delivered by UPS while the 55" would be delivered with white glove service.
The funny thing is that last week before this happened, I had committed myself to purchase the 47" model on Sunday just to take advantage of a very small one day cash back offer from Discover, but once it had been pulled, I started looking at other retailers and tvs like the 55" LG 6700, so I am back to analysis paralysis. The cash back was so small, it really shouldn't matter to me. It was going to be a second tv for the kids who are too young to mind watching on an old 19" CRT anyway. I think the only reason I was going to make a purchase now was to avoid the 8.25% price increase that Amazon is going to apply TX residents on July 1.