The XL2 version is an update to the XL1 that will be shown later on the floor -- it's the big sister to the XL1 media center system with a built-in HDtuner.
All of the XBR sets -- the 46-inch KDL-46XBR3 and KDL-46XBR2, 40-inch KDL-40XBR3 and KDL-40XBR2, and 32-inch KDL-V32XBR2 -- feature a built-in ATSC tuner plus one VGA, two HD component, and three HDMI inputs, along with the usual flurry of patented picture enhancement technologies, with the XBR3s sporting that shiny piano black bezel which is so popular nowadays that it's showing up at some of the finest bars along the Jersey shore.
The bottom line is that local broadcast channels are available inHD to any cable subscriber with a clear QAM tuner, whether you have a set-top-box or not.