Hi Mitchell Lee,
Thanks for your interest. We do not have an official release date hence we do not know the exact technical specifications yet. It looks like this is a 32 inch monitor with 4K resolution. You can follow Direct2Dell or the Dell website for more updates.
There is now information suggesting this screen is a 34" panel, 3440x1440 pixel resolution. 82cm wide and 34cm tall display area. Essentially a larger version of the U2913WM. A 21:9 aspect screen.
Availability may be during or after december 2013
Yes, it's serious. It's not a 16:10 large area display like the U3014 and has less display area and pixels in height. Imagine it basically as the U2713 with 880 extra pixels width.
The given dimensions are the panel surface only, not including the bezel or stand
I recently came across a tester for a new LG 34" IPS display panel. When considering the relationship between the LG 29EA93 and the U2913WM it seems that this is the only panel available that fits the 34" specification for the new Dell screen.
Still, treat this as unconfirmed information