Patch 3.0.3 arrives today, and with it, some substantial buffs to shadow priests' DPS. Well, there's a nerf in there as well, but it's a nerf that had to happen, I believe, for Blizzard to be willing to bump our DPS up to match other classes'.
Shadow Word:Death: The self-damage from this spell can no longer be reflected or redirected.
Vampiric Embrace: Vampiric Embrace now heals the priest by 15% and other party members by 3%, with Improved Vampiric Embrace increasing that by 66% with the full two points.
Vampiric Touch: The Spell power coefficient has been doubled and no longer triggers Replenishment when other priests cast Mind Blast.
Glyph of Shadow: Glyph of Mind Soothe removed and replaced with this glyph. This glyph increases spell power by 10% of spirit for 10 sec after critting while in Shadowform.
Glyph of Shadow Word: Pain: Increases damage done by Mind Flay when SW:P is present by 10%.