said by zod5000:How often to TV makers expect people to replace their TV's? Color SD TV's reigned supreme for the 70s to the early 00s. Often replaced only upon death or a significant size upgrade.
Today's LED/LCD displays have a much shorter life expectancy than yesterday's CRTs. So, I'm sure manufacturers are hoping for a ~5-7 year replacement cycle.
said by zod5000:I'm not sure 4k will be any more successfull. There's not too much content. It only benefits really big TV's. Even at 70" the quality gain over 1080p is minimal.
Just like HD, a majority of the 4k content will come after a huge marketing push and consumers starts purchasing the equipment. And yes, 4k will be overkill for most consumers, but never underestimate the marketing power of determined companies