I have absolutely nothing to base this on - just personal guesswork, but I doubt you'll be able to change specs while in combat. I imagine changing specs will have the same restrictions as changing gear - just makes sense to me.
Originally Posted by fastidius
So take a fight where you will need, say, 4 tanks. If the first 2 mobs hit faily soft, you could have a DPS Warrior/Pally/DK tank them. Then when they are done, they change weapons and DPS the main boss. Assuming you can not change specs in combat - most players would likely want to stay as Arms or Fury spec for that encounter since the majority of their time will be spent DPSing.
Failure is not an option. It comes bundled with the software.