Patch 4.2.0a (undocumented changes)

Firelands

 * Unbound Smoldering Elementals can no longer be crowd controlled.
 * Fire Scorpions can no longer be stunned or have their movement brought to a stop.

Molten Front

 * During the daily quest Fire in the Skies, three Firelords now appear rather than just one to make Death From Above a little less painful.