Because I don't follow tv market, I bought one during 2014-15 because the old one went out. Not everything is released annually so I was just wondering. good to know, fridge doesn't release every year, titleist golf clubs get released every 2yrs(some companies do release annually), etc. I never knew tv had something to "upgrade' every year. I guess tvs are like computers that gets outdated quickly.Yes they release new models every year ,very strange question ,why you dont know this?