Deathknight.info is showing off some screens about the Hairdresser (Ignore the horrible spelling error there), Stormwind harbor, Ebon hold and it's dock.
More Wrath of the Lich King info from the Neograf forums.
New item enchants
All of these including the other armor kits say: "Can only be used on armor in your possession, and attaching the armor kit causes the item to become soulbound." Looks like blizzard is putting an end to further freebies for twinks. Good thing really, you really don't want twinks with 3K health at level 19... Twink upgrades do need to stop somewhere.
Tree levels of new leg armor. Unsure whether these are uncommon, rare and epic. But chances are big that they are.
These can be applied to : Head / Chest / Shoulders / Legs / Hands / Feet.
Drums are once again going to play a large part in end game content. If you weren't sure yet whether you should start stocking up on leather, here's a bit of info to push you over the edge. No haste drums that work on both casters and melee yet it seems, but keep your fingers crossed, it may come yet.
Drums can be used while shapeshifted.
I'll make a post later about why you'd want leatherworking on most of your raiders. Just tag the RSS and keep an eye on updates.
Deathknight Tier 7 or 8
Again it's speculation whether this is Tier 7, Tier 8, or just another dungeon set. All i know is that this looks pretty damn sweet! Also see the earlier linked possible Tier 7 for Deathknights and warriors. But the warrior set could be the Deathknight set, and the DK set could be the warrior set. Time will tell.
Deathknight - Ghoul abilities
Looks like ghouls will have some interesting utility. Including spell interruption, stuns, some tanking capability and even AoE! You can expect their damage to increase with attack power. It's a mini rogue in a box, and if one dies you can always raise another corpse to replace your pet ghoul.
Disclaimer: Keep in mind that all info is from alpha, and thus subject to change before final release.