Sony Bravia EX700 series released

Sony of Japan just rolled out its latest Bravia EX700 series of Full HD LCD TVs with LED backlight, where it will come in 52", 46", 40" and 32" screen sizes while featuring MotionFlow 120Hz technology. Inside, the Bravia Engine 3 helps net you the sharpest image possible, alongside other improvements like an advanced contrast enhancer, 24p True Cinema, Bravia Link and a human sensor which will turn the TV on/off depending on whether there is a person in the room or not to help you save energy whenever you're too lazy to turn of the box once you're done with your shows.

So .. just how often do you guys upgrade your TV ?