This is a big-time buff patch for ret pallys. Below are the patch notes. The only nerf I see is noted in red below. This change should really only effect Holy paladins since they are the only spec that should be stacking int (and therefore, their max mana is not the same and their base mana).

Protection

* Divine Protection The penalty has been removed.
* Divine Shield The penalty has been changed so that all damage done is reduced by 50% in place of an attack speed penalty.
* Hand of Protection now Cannot be targeted on players who have used Avenging Wrath within the last 30 sec sec.
* Avenging Wrath now Cannot be used within 30 sec sec. of being the target of Divine Shield, Divine Protection, or Hand of Protection.

Retribution

* Judgement of Wisdom now give each attack a chance to restore 2% of the attacker’s base mana. (Old – 1% of the attacker’s maximum mana) *NERF to Holy pallys*
* Judgement of Light now also procs from ranged attacks.
* Seal of Blood now deals 27% of normal weapon damage. (up from 22%)
* Seal of the Martyr now deals 27% of normal weapon damage. (up from 22%)

Talents
Retribution

* Seal of Command now Gives the Paladin a chance to deal {0.45*Min Weap Damage+0.45*0.23*SpellPower} to {0.45*Max Weap Damage+0.45*0.23*SpellPower} additional Holy damage. (Old – Didn’t scale with Spell Power)
* Vengeance now stacks up to 5 times. (Up from 3)

Holy

* Judgements of the Pure now Increases the damage done by your Seal and Judgement spells by 5/10/15/20/25%, and your Judgement spells increase your casting and melee haste by 3/6/9/12/15% for 1 min.

Protection

* Sacred Duty no longer reduces the attack speed penalty on Divine Shield and Divine Protection. Rank 2 now increases total stamina by 8%. (Up from 6%)

The Glyph of Holy Light was buffed as well:

Glyph of Holy Light — Your Holy Light grants 10% of its heal amount to up to 5 friendly targets within 10 20 yards (up from 5 yards) of the initial target. (yay!!)

While this isn’t the holy pallys answer for an AoE heal, it’s better than it was. The old glyph, effecting everybody within 5 yards, barely covered other melee. If melee dps are positioned where they should be (behind or to the side of a mob), then that put them out of the 5 yard range of the glyph (generally speaking of course, that would vary by boss encounter). The buff to 10 yards makes this a must have glyph for all holy paladins.

Edit (12/15/08): Two other glyph changes were announced on mmo-champion.com:

Glyph of Flash of Light - Your Flash of Light has an additional 5% critical strike chance. (Old – Your Flash of Light heals for 50% less initially, but also heals for 140% of its inital effect over 12 sec.)
Glyph of Hammer of Wrath – Reduces the cost of Hammer of Wrath by 100%.  (Old – Increases the range on Hammer of Wrath by 5 yards.)