We have been seeing a few problems with the O2 sensors on the 2011 pick-ups, The O2 sensors that are on the 2010 and 2011 pick-ups are the same as 2007. 5 to 2009 trucks. This leads me to believe that the problem is not with the o2 sensors but a ECM programing issue. But the sensors are on back order and difficult to get right now and usally when we see a back order of this size it means that there is probably a new design change, but at this time I do not know of any new sensors coming.
Mike