Spending a lot of time in front of a computer, I’d really love to have a larger monitor than my current 27″. The options for this are not very good, there is the Philips BDM4065UC, which is essentially a 40″ 4K TV-display with display port input, but it is far from being good as a monitor. For one thing, the screen is too high and not wide enough, as I find it easier to have multiple windows full height side by side. And the display is not optimized for monitor use, as it does not have square pixels and colors are not reasonably accurate out of the box.
What I’d love to see instead is to see the technology used in today’s 27″ monitors applied to create a large monitor. It should fit within the 8 million pixels for 4K, so a good size would be 4200 * 1800 pixels, at 120 dpi. That covers 35″ by 15″ (89cm by 38cm), with a diagonal of 38″. 120 dpi is about the highest resolution we can have without a 100% scaling becoming unreadable, and the width allows us to have three or four windows side by side.
If we want to stay with 110 dpi, a 24:9 format would be much more suitable, for example 1740 by 4640, that is 16″ by 42″ (40cm by 107cm).