One area where I've added weight in the last couple of years is with my tires. I now use Armadillo tires because of their strength and durability. I've also moved from 28 mm to 32 mm and now 38 mm because I've ridden and toured on some loose surface roads and trails.
The other area where I've added is carrying a computer. Before 2008, I didn't travel with a netbook computer. Now it goes with me on each trip.