Dell features the UltraSharp 3007WFP 30 inch Flat Panel Monitor and is already selling it on their site.

The Dell 3007WFP sells for $2,199.00 on Dell.com.

But you need to shell out a bit more money unless you already own a dual-link DVI-D graphics card that supports WQXGA (2560x1600px) resolution in your PC.

The huge Dell LCD monitor is optimized for high resolution applications including pre-press and video editing, 3D modeling, CAD, visualization, digital photography and gaming. Maximum resolution is 2560x1600 pixels. The 3007WFP features a 11ms response time, 700:1 contrast ratio, USB ports and a 9-in-2 card reader.
See also the Dell CES site.