Some interesting things got added for tailoring in the latest LK beta build. Tailoring is the first production profession I got to 375, and although I'm angry at the Primal Mooncloth set for having no stamina which causes me to die all the time, the profession still holds a special place in my heart.
Particularly interesting is A Guide to Northern Cloth Scavenging, which is a tailoring recipe that seems to give the tailor an increased chance to get cloth drops in Northrend. I'm not sure where it comes from, but I'll certainly be glad to get my hands on it.
The other additions came in the form of several sets. The Frostsavage items aren't really a set as of yet, in that they don't have a set bonus, but otherwise they're similar to BC's Imbued Netherweave set. Blue quality, BoE, level 80, relatively cheap mats, decent stats to fill in spots where you haven't found anything good from a quest. Eight pieces of Frostsavage are available.