Hello!
Just a short tip here, that you probably could work out on your own, but if you're reading this post chances are you still need a bit of an enlightment, so let's get down to it:
In the new wing of Icecrown Citadel, there's going to be an encounter with Arthas' little pet, called Sindragosa, which will strongly remind you of Sapphiron.
PTR reports give you a bit of an insight about the fight.
It will be heavy on raid damage, dealt as a frost damage aura (much like Sapphiron), and also, there will be an ice block mechanic, and frost bombs, just like Sapphiron's. The addiotion is, the person isnide the ice block will take heavy frost damage, and the raid needs to free him.
Summing up, there's a constant area frost damage, and a kind of a burst frost damage, so to all of you gold-makers comes the conclusion of:
Mighty Frost Protection Potion
+
=
If you don't have the recepie, it drops from Damned Apothecary
Not much to explain here, you can expect a rise in the reagent's price.
Also, since one will need >MOTES< of fire, to make this potion, there's a new chance to play the Eternal - to - mote scam, which consists of buying the eternal, shattering it, then puting on 2 stacks of Crystallized Fire overpriced.
You can also consider crafting Frost resistance gear, but the numbers are still being adjusted, so you don't know wheter it will be needed or not.
Hope this post was of help.