Lately I've been craving 2560x1440 material. Like many of you, I have a 30" 2560x1600 display for my computer. For my own recent "TimeScapes 4K" video (shot and finished at 4K) I did release a 2560 version, which Jarred was generous enough to host here: http://red.cachefly.net/TimeScapes4K2560p.mp4 This download has become very popular, even compared to 1080p. The 2560 image is far superior to 1080p. It is one way to differentiate footage shot on 4K rather than 1080p. I think any of us with 2560 monitors would prefer full 2560 renders versus 1080p, which only fills up about 2/3rds of the screen. I wonder why Apple has not released any trailers at 2560 yet, considering the fact they have probably sold tens of thousands of Apple 30" 2560 displays? 2560 for trailers seems long overdue.
But here's a question: what should this resolution be named? In my opinion, "2560" sounds way better than "1440p". Also, because of varying aspect ratios, it might be common to see 2560x1100 trailers, for example. To me, it makes more sense to concentrate on the 2560 number of vertical resolution lines, rather than the number of horizontal resolution lines. This would follow the same naming convention as "4K", but it doesn't make much sense to call it "2560K"... or "2.56K". Calling it "2560p" might technically work, but could also be confusing. Maybe just simply "2560" resolution?