Titleist AP1 dual cavity irons

We have had 5 great generations of AP irons including both the AP1 and the AP2's.  The first gen came out in November of 2007 and were just called the AP1 and AP2; the second gen came out in November of 2009 and were called the 710 AP1 and 710 AP2; the 3rd gen were released in November of 2011 and they were the 712 AP! and AP2.  In November of 2013, we launched the 714 AP1's and AP2's and a week ago, we introduced our best ever - the 716 AP1 and 716 AP2's.