I believe it was just announced on USFSA.org.
"BENSENVILLE, ILL., SELECTED TO HOST 2012 U.S. ADULT FIGURE SKATING CHAMPIONSHIPS
(6/8/11) - U.S. Figure Skating announced today that the 2012 U.S. Adult Figure Skating Championships, hosted by the Skating Council of Illinois, will be held April 10-14 at the Edge Ice Arenas in Bensenville, Ill.
The U.S. Adult Championships annually feature 400 skaters competing in more than 100 open events and eight championship events. The 2012 version will mark the 18th time the competition has been held.
Competitors are divided into five age groups (21-30, 31-40, 41-50, 51-60, 61+) and two tracks (masters and adults). Events are held in singles, pairs, ice dancing and interpretive. Skaters qualify for the championship and championship gold events by placing in the top four at one of three sectional championships, which will be held in March."