My response is to say, "who cares" if the new trigger re-set is in the M&P45 yet. As Vickers and Hackathorn both say, "shooting to re-set" or short-stroking the action, is the worst training scar in current students of theirs. Let that trigger go all the way forward, and stop listening and feeling for re-set and then jerking the trigger back to hurry the next shot. The sooner everyone stops worrying about it, the better we will be. Then we will not have to worry about whether the pistol has the new parts or not. In addition, the next time you fire a revolver, you are less likely to lock up that action because you are used to short stroking the pistol.