We have 16:9 and 16:10 right now and I know its fairly new but, does anyone know what will be next? Or will the widescreen ratio be around for a long time?
There are several different widescreen ratios in use varying in the number of horizontal lines. I doubt people are going to want a screen that is much wider because then it will start to get awkward. Wider ratios could be used but they would probably need to be curved as your peripheral vision would better detect the image.
Given that for HD broadcasts, 16:9 has become the norm, I doubt we'll see anything different any time soon. The only thing that is wider are theatrical films (most modern films are 2.39:1), and we'll just have to deal with the black bands at the top and bottom of the picture, even on a 16:9 screen. 4:3 has been around for decades, so I think 16:9 will be around for a long time too.