Here are a few of the changes of 4.2, just curious if the class will need updated ?
Divine Light mana cost has been increased to 35% of base mana, up from 30%.
Flash of Light mana cost has been increased to 31% of base mana, up from 27%.
Holy Light mana cost has been increased to 12% of base mana, up from 10%.
Holy Shock mana cost has been decreased to 7% of base mana, down from 8%
Illuminated Healing (Mastery) has been adjusted slightly so that if a paladin refreshes an existing copy of his or her own Illuminated Healing on a target, the new absorption amount will be added into the old absorption amount and the duration will be reset. The total absorption created can never exceed 1/3 of the casting paladin's health.
Infusion of Light can now lower the cast time of Flash of Light by 0.75/1.5 seconds, in addition to Holy Light and Divine Light. In addition, the old Denounce spell overlay effect has been transferred to Infusion of Light since Denounce is no longer a proc.
Speed of Light now increases movement speed when Holy Radiance or Divine Protection are cast. In addition, this talent now reduces the cooldown of Holy Radiance by 13/26/40 seconds, up from 10/20/30.
Walk in the Light now improves Word of Glory healing by 30%, in addition to its current effects.