So holy paladin buffs.

#1 - June 19, 2013, 11:49 p.m.
Blizzard Post
New sacred shield:
Sacred Shield (New) Holy: When you or your Beacon of Light target falls below 30% health, that target gains Sacred Shield, absorbing 30% of their maximum health. Sacred Shield can only occur once every 2 minutes. Protection, Retribution: When you fall below 30% health, you gain Sacred Shield, absorbing 30% of your maximum health. Sacred Shield can only occur once every 2 minutes. Paladin - LvL 45 Talent. 40 yd range. 6 sec cooldown.
-from mmo-champion.

Also, divine plea no longer reduces your healing.

Hopefully, welcome back to the game.
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#24 - June 21, 2013, 8:16 a.m.
Blizzard Post
Also interesting for PvP, from 5.4 Patch notes:
    Divine Plea no longer reduces the amount of healing done by 50%.