Jewelcrafting is getting a lot of new goodies in the next patch, perhaps more than any other profession. Many of the new recipes appear to be drops from the new raid instance, but a fair number are also being sold by the new faction vendor. Just recently some new epic gem-cutting recipes were added that will utilize the current epic gems now available from Black Temple:
Most of these appear to be the promised Spell Haste gems, with a couple of random ones thrown in. My next task is to see if I can track down the new Engineering goodies... stay tuned!