I just got these after returning the '08 version of the Hardrock Mid. The '08 version began to come apart on the sides from normal trail abrasion after using about 4-5 times on long day hikes. The newer version seems like a much better light weight mid hiker. The materials seem tougher, the toe box is bigger, and it's lighter. Although the sole is thinner than previous versions (which I've seen people hate on for it's apparent lack of support), it seems to still be very supportive and offer great rock protection. I haven't put any miles on this pair yet, but if it dissapoints I'll be sure to update my review.
I've tried lots of similar shoes trying to get the perfect ultralight mid day hiker for high mileage (Inov8 Roclight, Keen Shellrock Mid, etc.)and this seems to be the best so far.