This just in from the Dev Chat

Q: What is the goal when re-designing the paladin class? How do you plan to change rotations, talents, etc?

A. All of the paladin specializations will make use of a new resource called Holy Power. Holy Power accumulates from using Crusader Strike, Holy Shock, and some other talents. Holy Power can be consumed to augment a variety of abilities, including:

• An instant mana-free heal: Word of Glory
  
• A buff to increase holy damage done: Inquisition
  
• A massive physical melee attack for Retribution paladins: Templar’s Verdict
  
• Holy Shield’s duration is now extended by Holy Power
  
• Divine Storm’s damage is now increased by Holy Power

We also introduced several new heals for Holy Paladins including Healing Hands (an AoE heal-over-time that is applied to all players standing near the paladin), Light of Dawn (a cone heal with a 30-yard range), as well as a new heal called Divine Light, which is similar to a priest's Greater Heal, and the new instant heal mentioned above, Word of Glory.

Whoa. . .

That is pretty startling news. They are changing the resource system for paladins. So, according to the above quote, Paladins will no longer use mana. Even Holy Paladins.

I am going to have to let my brain chew on this for a while. I'll be back with thoughts later.