I revisited Chanel's Fall 2011 runway collection, and out of 78 runway outfits 90% of the models are wearing flat boots and oxfords. The rest are wearing 2 inch heels or kitten heels. You can flip through the slide show here:
http://www.style.com/fashionsh.....RTW-CHANEL
It might take a while, but I'm pretty sure that the low heel trend is getting stronger.