If the changes on Wowhead are accurate, Disc Priests are in for quite a treat.

Prayer of Healing: A powerful prayer that heals the friendly target's party members within 30 yards for 3633 to 3837 (up from 3027 to 3197)

Divine Aegis: Critical Heals and all heals from Prayer of Healing create a protective shield on the target, absorbing 30% of the amount healed. Lasts 12 sec.

it's a HUGE buff to Prayer of Healing. PoH not only saw a throughput increase, but it ALSO procs Divine Aegis on EVERY target! Wooot!!!!

Power Word: Barrier: Summons a holy barrier on the target location that reduces all damage done to friendly targets by 30%. While within the barrier, spellcasting will not be interrupted by damage. The barrier lasts for 10 sec (Down from 25).

PW:Barrier reduces ALL incoming damage by 30% for 10 seconds! Yeah baby!

Grace: Your Flash Heal, Greater Heal, Heal and Penance spells bless the target with Grace, increasing all healing received from the Priest by [4%] 8%. The effect will stack up to 3 times. Effect lasts 15 sec. Grace can only be active on one target at a time. (Up from [2%] 4%)

And just for good measure, Grace was DOUBLED!

This priest was just made a very happy panda :)