The cat's out of the bag now on the live stream, so let's go ahead and spoil away.
The new kits are Priest of Tempus and Priest of Tyr. The Tyr kit is one I had done for Dorn's ToB storyline that ended up being dropped due to time constraints; the Tempus kit is one everyone wants (including me) for IWD.
The Tyr kit gets Exaltation once/five levels, and Divine Favor once/ten levels. Divine Favor is is a scaling thac0/damage bonus for the priest.
The Battleguard gets Holy Power once/five levels, and Chaos of Battle every ten. Chaos of Battle is an area of effect spell that randomly grants a scaling thac0/AC/save/HP bonus to allies, and penalties in the same categories to enemies.