"Default Patch Notes 5/14/13
Get your patch notes here! Some changes have gone in recently for Age II.

Fixed a glitch with workshops which made it possible to upgrade armor without a cooldown.
To capture a Historic Hero, you must now capture the city he is in.
Historic Heroes are now initially placed only in level 10 NPCs."

The part about HH's being placed in level 10 NPCs didn't occur on NA50.