Be warned, especially if you are in INT caster... these quests got on test earlier than planned. I do not mind them being there, but the 7th quest (The Temper of Silver) has some bugs that may get you in a state that will prevent you from being able to do the quest without re-starting.

So I would advise waiting on doing the "The Temper of Silver"

the other quests have some cosmetic bugs that have been fixed, but nothing that stops you from completing the quests.