Not really. They really beat shadow priests down with the nerf bat in certain areas. Seems the blues want to make them raid dps viable along the lines of a mage while stripping them of all their synergy and party buff utility that used to be so sweet for multiboxing.

Here's the most recent change to dispersion.

Dispersion - Damage reduction lowered to 60% from 90%. Now only regens mana, not health and mana.

a few more changes

Improved Shadowform - Movement impairing effects removal effect removed.
Misery - No longer increases the damage of your Mind Blast, Mind Flay and Mind Sear spells by an amount equal to 15% of your spell power.
Improved Fade - Now also reduces the cooldown of your Shadowfiend ability by 1/2 minutes.


Seems they hate spriests...