The 23rd was supposed to be a huge day for World of Warcraft as Deathwing
shattered the world of Azeroth in a Cataclysmic event. We
were all prepared for that, or at least as prepared as we could
be. What many of us were not prepared for was another change
to many character classes so soon after they were changed in recent
patches. For many this is a huge change and could be viewed
as a knee jerk reaction and is potentially shattering many classes
viability just before Cataclysm's release.

We'll take a closer look at the impact of these changes in The Shattering of Azeroth's Heroes - Class Changes in WoW Patch 4.0.3a.