Last article I saw on the matter was in June and in Popular Mechanics....it stated that very little had been done as of yet. FN, CZ, S&W, Sig, Glock, and Beretta are all still in the running. 9mm, 40S&W, and in the case of FN the 5.7 are all contenders still at this time.
One must remember that the 1911 was up for replacement in the 50's and it took 3 decades to finally do it. Things move very slowly in the U.S. military with arms changes, especially with pistols.