Source: http://www.engadget.com/2013/04/07/sony-unveils-professional-4k-oled-monitor-prototypes/
The 56-inch OLED TV Sony trotted out at CES may have lost an inch on its way to the market, but that extra few centimeters can still be had, at least in the professional sector. The company announced its A Series Trimaster EL monitors at NAB today, outing a 4,096 x 2,160 30-inch model as well as a 3,840 x 2160 56-inch display. Both panels boast of wide viewing angles and low color shift, promising accurate signal reproduction for industry professionals working with 4K content. No word yet on pricing, but professionals can look forward to upgrading sometime in May 2013. Hit the break for the official press release, item skus, and a quick break down of what products the A series will be replacing.