No Stock UI has a great list of updated and compatible 3.1 addons for you to peruse.
Discipline Priest Specs
Soul Warding: Reduces the cooldown of Power Word: Shield by 4 seconds and reduces the mana cost of Power Word: Shield by 30%.
Absolution: Reduces mana cost of Dispels and Disease curing spells by up to 15%.
Focused Will: Increases your spell critical effect by 3% fully talented. If you get crit, incoming damage is reduced by 4% and healing effects on you increase by 5/10/15%.
3 points can go either into Absolution or Focused Will. With the amount of cleansers and dispelers in my arsenal, I opted for the increase crit for the time being. But that might change later.
Improved Flash Heal: Must talent, I think. Reduces mana cost of Flash Heal by 15% and increases the crit chance if your targets are below half health.
Rapture: ItÃ¢â‚¬â„¢s different now. When your Shield is absorbed or dispelled, you instantly get back 2.5% of your total mana and your target gains 2% mana, 8 rage, 16 energy, or 32 runic power. Works every 12 seconds.
Discipline Priest Glyphs
Glyph of Flash Heal
Glyph of Power Word: Shield
Glyph of Penance Ã¢â‚¬â€œ NEW: Your Scribes will have to be lucky here.
Glyph of Prayer of Healing Ã¢â‚¬â€œ At least itÃ¢â‚¬â„¢s some form of AoE healing if the fight calls for it
Holy Priests Specs
Blessed Resilience: For 3 points, it increases your healing effectiveness by 3%. The stronger your healing effectiveness, the better this talent will be. For the time being I opted not to get it.
Serendipity: A haste inducing talent. Requires you to Flash Heal or Binding Heal before it adds a 12% haste buff per stack up to 3 (total of 36%). Makes your next Greater Heal or Prayer of Healing faster. Note: Binding Heal used to grant 2 haste buffs per one cast. It doesnÃ¢â‚¬â„¢t do that anymore.
Test of Faith: No change here.
YouÃ¢â‚¬â„¢re going to end up with 6 talent points. You can only invest in two of the above abilities. I recommended Serendipity and Test of Faith.
Empowered Renew: Another instant healing spell added to Priests. The closest thing I can think of is that itÃ¢â‚¬â„¢s an inverse Lifebloom. Instead of tick, tick, tick, BOOM! It becomes BOOM! Tick, tick, tick.
Holy Priest Glyphs
Things will be very busy in the World. New places to explore, new dungeons to conquer. All of us will do our best to provide the advice and guidance in the challenges ahead.