Just to get it up here because there were questions, the confirmed 2.3 changes and the blues who said it:
Confirmed 2.3 Paladin Changes
-Mana cost for Exorcism, Holy Wrath, and Hammer of Wrath lowered.
(Source)
-Vengance duration increased to 30 seconds.
(Source)
-Improved Seal of Crusader benefits put into base spell, talent benefits replaced with those of Sancitified Crusader.
(Source)
-Sanctified Crusader renamed to Sanctified Seals, which increases chance to critically hit with all spells and melee attacks by 1/2/3% and reduces the chance your Seals will be dispelled by 33/66/100%.
(Source)
-Crusader Strike cooldown reduced to 6 seconds.
(Source)
-Vindication frequency and duration increased and reduces all attributes by 5/10/15%.
(Source)
-Pursuit of Justice is now 3 ranks and increases movement speed by 5/10/15% and reduces the chance to be hit by spells by 1/2/3%.
(Source)
-Lower ranks of Flash of Light and Holy Light are now properly penalized when used with Blessing of Light.
(Source)
-Cleanse and Purify range increased to 40 yards.
(Source)
-The combat log will now show the health gained from rank 5 of Judgement of Light as Judgement of Light instead of Seal of Light.
(Source)
-Weapon Expertise (Protection) renamed Combat Expertise, now increases expertise by 1/2/3/4/5 and total Stamina by 2/4/6/8/10%.
-Paladin seals no longer have a low chance to be dispelled if you have 3 points in Sanctified Seals.
-Judgement of Wisdom: It is no longer possible for the mana energize effect to trigger off of reapplication of the Judgement of Wisdom.
-Divine Favor: When this ability is cast immediately after a critical heal, it will no longer be removed incorrectly.
-Fanaticism (Retribution) now also reduces threat caused by all actions by 6/12/18/24/30%.
-Precision (Protection) now increases spell hit chance as well.
-Seal of Vengeance: The bonus damage this ability dealt when the debuff is fully stacked on the target was incorrectly too low. It is now increased.
-Spiritual Attunement: This ability will now gain mana properly from Vampiric Embrace heals.
I'll try to keep it updated when/if there are any more changes.