I've been using a 39" Seiki 4K monitor for my application development 'needs' for about 2 weeks and I have to say 4K is a substantial step forward from 3 or 4 1080p screens. HDMI 2.0 is great because - especially for desktop use - we can increase from the 30Hz limit of HDMI 1.4.

Take a look at reviews of the Seiki 4K unit from private users for a feel of how things are coming along: http://www.amazon.com/Seiki-Digital-SE39UY04-39-Inch-Ultra/p...