I was curious about this as well. I looked up the quick release hardware part # from the triumph accessories and then pulled up the installation instructions. Looks like the lower yoke has some mounting points that are needed but were not present on older models (pre 2011 I think).

SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq NEW: 19 Goldwing Tour DCT