I just got my K702 Annies (2014 version that came with K712 style pads) back from Tyll at Inner Fidelity. I sent them in for measurement as part of the Volunteer Headphones for Measurement program he has going. I don't see the measurements posted on his site yet, but he did include a print out in the box when he returned my cans.
Just eyeballing it, it looks like they're nearly identical to the K712s. I don't have it in front of me at the moment, but if I remember correctly, the only noticeable difference was the Annies had slightly better %THD+noise @ 100dB. I'd like to get a digital copy of the measurements and overlay them for a more precise comparison. Hopefully Tyll uploads them soon. If not, I can scan my copy for you guys, although I'd want to run it by Tyll first in case there's some reason he's holding off on sharing his results.