Divine Insight now the Shadow Word: Pain proc causes your next Mind Blast within 12 sec to be instant cast and cost no mana.
From Darkness, Comes Light now the Vampiric Touch proc causes your next Mind Spike to not consume your damage-over-time effects, become instant cast, and cost no mana.
Glyph of Shadowy Friends (New) Your shadow form extends to your non-combat pets.
RE - Talents:
I'm all for things costing less mana, though our mana problems are largely nonexistent anymore.
RE - Glyph of Shadowy Friends: