We have received confirmation from a source at Viewsonic that the US-based technology company will release a 27-inch monitor with USB 3.0 and Displayport connectors as well as (possibly) HDMI, D-Sub and DVI ports. USB 3.0 won't power the screen.
The monitor - which is called the VP2770-LED - will have a QHD resolution of 2,560 by 1,440 pixels and will be launched towards the end of Q3. The only other titbit we've managed to gather is that it will cost less than the competition (ed : that's fairly easy). As a comparison, the Viewsonic VX2753mh can be had for around £250 with a full HD resolution and no USB ports.
Expect the VP2770-LED to come with integrated speakers as well as a three year warranty. Competition is thin at the very top end of the 27-inch qHD monitor market. The Dell U2711 costs more than £500 while you cannot pick the Fujitsu Technology Solutions P27T-6 or the ZR2740W for less than £600.
As for Apple's Thunderbolt LCD display, you're be lucky to find one for less than £900. As the majority of devices under the sun offer full HD resolution and prices tumble down, manufacturers are likely to look for the next big jump in pixel count with 4K (2,560 by 1,600) being the logical follow up.