Dropping my Nikon D5100 and 40mm Macro Lens for a Nikon D7000 and a 16-85 Wide angle Lens. Adds a lot of weight (more than 1lb), but worth it for me!
Dropping the Clif Bar, Nuts, and Dried Fruit diet for cooked dinners, likely with a Stoic Ti pot and a Ti wood stove.
Dropping the EMS 20º Solstice bag for a Mountain Hardwear 32º Ultralamina and a down jacket.
Dropping the Nalgene Cantene flexible bottle for a Nalgene 1.5L hard plastic bottle. Still carrying the Platypus 2L.
Now that I look at it, I seem to be only adding weight in 2013....
Bike Touring: Adding a suspension seatpost and adding back the modified Ortlieb panniers.