It looks like Blizzard really took their time on these sets. Some I may not like as much as others, design-wise, but they all have top-notch texture work and attention to detail. Check out the wool pattern on the shaman set, or the fiery brands on the warrior set, or the two-toed hunter boots. A lot of the sets are adorned with moving parts, too, like the druid shoulders, which snap and bite periodically. And most of them follow a very cohesive theme -- "stuff we've seen in Wrath up to this point." The warrior set should immediately remind you of King Ymiron, the rogue set is, well, a geist, and the death knight set might as well be called "Arthas Jr."
So, check out what you've got coming in Patch 3.3. With the new Dungeon System, a week or so of heroics will get you a full set of Tier 9 gear and get you all set to face Arthas, if you're up for it.
Patch 3.3 is the last major patch of Wrath of the Lich King. With the new Icecrown Citadel 5-man dungeons and 10/25-man raid arriving soon, patch 3.3 will deal the final blow to the Arthas. WoW.com's Guide to Patch 3.3 will keep you updated with all the latest patch news.