I've been away for a fair bit of time, and I'm aware mob spawns have changed in the wild, but have we got exact details? I've had a look but am a bit crap and can't find any posts on it although I know they're there. The buggers are spawning on top of me now in the wild with candles less than four blocks away. Eek!
http://empireminecraft.com/threads/important-empire-update-silence-of-the-lambs.14895/ that should help ya out