MMO-Champion put up an update for its Tier 8 listings today, including some high res screenshots showing off the high res skins, and a video of all of the sets. Most of this is stuff that we've seen before, but some of it is new. New and wonderful. I'm really not a fan of the Paladin set this time around, but there also seems to be a robe version which I like much better. It's still pretty awful on Females, though. Again, I ask, why in the world did they bring midriff back on tier sets? Leave that to the greens and blues!
We've also started to see stats for some of these sets on the PTR, but not many. A lot of the raid items that are becoming available on the PTR haven't actually had their stats adjusted from the Tier 7 items they were copy-pasted from. In this case, the Warrior set that we've seen is from Ulduar-10 and shares stats with gear from Naxxramas-25. That might actually be a pretty accurate indicator of what it will be on live, with maybe a little extra tweaking upwards to make the 10-man still useful for people who did Naxx-25 previously.