Sorry to burst your bubbles guys, before we all jump up and down for yet another new format like we did when 3D came, think about the fact, whether there is native 4K software that you can buy in say the next 12 - 24 months, and how many and how much would they be, and what kind of advantage you will ACTUALLY see, not what you think you can see, when most of us sit 8 - 10 feet away watching a 50" 60" TV or 80 - 100" projector screen.
4K is a fantastic technology I am positive but I think it is still couple of years away before it can be logistically easy and affordable for most of us to enjoy, and by then it would be really nice.
You might want to read this article, or others, to see what true 4K means to the consumer market: