The new rack I got this time has a superseded part number, but the tie rods are identical. However, I replaced the last one sometime between now and 2010, so not sure if that means that now all year models are showing that this is the current part number or if there really is something new. The parts guy I ordered from said a new part number could mean something as trivial as a different supplier/mfr with no real difference in performance or strength.
I'm used to no sway bar, as I removed it back in 2008 or so. I have considered putting it back on when I redo my spindles this winter. I like the way the truck stays more level in slow moving, off camber situations on the trail. When it is connected, the body rolls more with the terrain - which is fine on the road, but not so much on trails/obstacles.