Here are the changes to the Paladin class. You can also view the rest of the patch notes using the link below.
Also MMO-champion has a nice 3.2 compilation
* Blessing of Sanctuary: This blessing now also increases stamina by 10%. This effect is not cumulative with Blessing of Kings.
* Charger: Can now be learned at level 40.
* Crusader Aura: This ability now also grants its flying speed increase to a druid’s Flight Form and Swift Flight Form.
* Exorcism: Now has a 1.5 second cast time, but can once again be used on players.
* Hand of Reckoning: Redesigned. Now does damage only when the target does not currently have the caster targeted, but damage done increased to 50% of attack power, occurring after the taunt effect is applied.
* Judgements: Some of these attacks were considered ranged and some melee. They are all now considered melee attacks that can’t be dodged, parried or blocked.
* Judgement of Light: Now heals for 2% of the attacker’s maximum health instead of a variable amount based on the spell power and attack power of the judging paladin.
* Lay on Hands: The buff from this ability now reduces the physical damage taken by the target by 10/20% instead of increasing the target’s armor.
* Righteous Fury: No longer has a duration, remaining until cancelled or death. Also cancelled when a Paladin activates a different talent specialization.
* Sacred Shield: When a paladin casts Flash of Light on a target with this buff, they also now place a heal-over-time effect on the target, healing that target for 100% of the Flash of Light amount over 12 seconds.
* Seal of Blood: This ability has been removed.
* Seal of the Martyr: This ability has been removed.
* Seal of Vengeance and Seal of Corruption: These seals have been redesigned to deal substantially more damage. Now, once a paladin has 5 copies of the debuff from these seals on his or her target, on each swing the paladin will deal 33% weapon damage as Holy, with critical strikes dealing double damage. In addition, the damage-over-time effect is now considered a melee attack instead of a spell attack and the effects from these seals can only be triggered by auto-attacks and Hammer of the Righteous.
* Shield of Righteousness: Now deals 100% of shield block value as damage instead of 130%. In addition, the benefit from additional block value this ability gains is now subject to diminishing returns. Diminishing returns occur once block value exceeds 30 times the player’s level and caps the maximum damage benefit from shield block value at 34.5 times the player’s level.
* Warhorse: Can now be learned at level 20.
+ Beacon of Light: The healing amount on the Beacon of Light target is now based on the total healing done (including over-healing) instead of the effective healing done. Radius increased to 60 yards. Multiple Paladins can now have this active on the same target. Buff indicating a player is within range of the Beacon target is no longer displayed.
+ Divine Intellect: This talent now gives 2/4/6/8/10% increased intellect instead of 3/6/9/12/15%.
+ Illumination: This talent now returns 30% of the mana cost of the spell instead of 60%.
+ Ardent Defender: Redesigned. Any damage that takes the paladin below 35% health is reduced. This reduction applies only to the portion that pushes the paladin below 35% health (example: a paladin at 50% health takes a 40% hit; the first 15% hits as normal while the next 25% is reduced). In addition, once every 2 minutes an attack that would have killed the paladin will fail to kill, and instead heal the paladin for up to 10/20/30% of maximum health depending on the paladin’s defense rating (example: a paladin with defense equal to only 5 times his or her level will receive no healing from the talent, while a paladin who is immune to critical strikes from boss creatures through defense will receive the maximum amount).
+ Guarded by the Light: This talent will no longer cause Divine Plea’s duration to be refreshed by using Judgement of Wisdom, Judgement of Justice, or Judgement of Light.
+ Art of War: Now only applies to melee critical hits, but will make your next Flash of Light or Exorcism instant. In addition, this talent now provides notification in the floating combat text when it activates.
+ Crusader Strike: Damage reduced to 75% weapon damage to match the new 4-second cooldown. Mana cost reduced to 5% of base mana.
+ Seal of Command: Redesigned. This seal now deals 36% weapon damage on every swing, and deals substantially less judgement damage.
+ Vindication: Redesigned. Now lowers target attack power, is consistent and does not stack with Demoralizing Shout.