Panasonic Corporation of North America, the industry leader in high definition and Plasma HDTV, today introduced its expanded 2009 line of THX® Certified* VIERA® HDTVs. In 2008 four VIERA HDTVs achieved THX certification, while the 2009 line expands the prestigious certification to 9 models- the VIERA Z1 as TC-54Z1 54-inch class (54” measured diagonally), the V10 VIERA series includes the TC-P50V10 50-inch class (49.9” measured diagonally), the TC-P54V10 54-inch class (54” measured diagonally), the TC-P58V10 58-inch class (58” measured diagonally) and the TC-P65V10 65-inch class (64.8” measured diagonally) screen sizes…