Do you have a source for that? Because considering how little we know of Terraria 2, I definitely don't think that is one of the things we do know for sure.
And where did you hear that? Considering that development on Terraria 2 hasn't even started yet, I doubt that's anything more then random speculation.
It's a maybe for Terraria 2.
This was asked on Cenx's profile.
And this was Cenx's answer, among other messages, in that profile post.