I have seen and shot several 692s and the action appears mechanically identical to the 680 series. The only difference with the 692 is that Beretta went back to the slightly wider frame that it once used in target guns. The Beretta 680 and earlier 682s had a wider frame than the 687 and 686. In the 90's Beretta began using the same frame with the 682 Gold (pre-E) as the rest of the 680 series.
The DT10 and the 692 actions are very different. The DT10 has cross locking lugs and a drop-out trigger. The DT11 uses the same action as the DT10 except that it too is slightly wider than its predecessor.