Panasonic issued an announcement in Japan that their World's Largest Plasma TV is going to ship to business customers this autumn in the United States. End-Consumers can expect the 103 inch Plasma early 2007.

In April Panasonic said the first time that they actually will sell the 103 inch Plasma this Christmas.

The new announcement differentiates between businesses and consumers. Businesses in the US and Japan apparently can already pre-order their Plasma wall. Consumers are supposed to be able to get a 103 inch Panasonic Plasma HDTV in early 2007. There is still now price yet announced.
A total of 5,000 103 inch plasma TVs are going to be available. I do not know how Panasonic will qualify you as a business. One possibility is that Panasonic will have a panel only version of the TV for businesses. On the other hand at such a size, you are anyway looking at a custom home theater installation.

The 103 inch Panasonic Plasma HDTV features a 3000:1 contrast ratio and of course full HD resolution (1920x1080px).
More details in this Panasonic press-release (Japanese) and on Reuters. More Panasonic Plasma TVs.