That's my biggest concern.
Hopefully there wont be any big issues with them.
As far as release time I'm guessing October.
(I wonder why I said that...)

Yea none of these are out on test yet so im not sure when they will be released they better be on test by the end of the first week of october if not we will be getting them after or right before the hallows eve event

I think they will be lvl 33+. I think they will have orange skulls above their heads. I think they will look the same as every other creature. I think they will come out some time around October 31st. I can't wait!:)

So is that undead guy Simon? They are making a bat and stump boss too? Never saw that coming. Simon looks like all the other undead pirates too

As I said, everything in my post is purely speculation. That concept art was just the beggining of their designs, and judging by the pic we got telling us about the bosses they've changed the pirate boss. Therefore, it's possible that we do not get a stump boss or bat boss at all, but instead just the art of what they had planned.

Nay, that just be one of the new enemies with a green glow. Think about Goliath: they probably actually do make new designs for new enemies.

Yea i know they look kinda cool but kinda boring in the since they look the same