Was at the local COSTCO in Northern VA today, they just got in 2012 Sharps for 70 and 60 inch of the 640U model. The Number at COSTCO is LC-60C6400U and LC-70C6400U. Obviously, the numbering system looks specific to COSTCO as latest Sharp release, uses LC-60LE640U. Anyway, these TVs have a Matte Screen, the base does not swival, they have 240 motion and Smart Central, etc.
The only thing I could not confirm is if these models can surf the net. Anyway, FYI.