Rick had an email conversation with the guy who invented the Herpstat, asking if he was going to ever add a humidity control to it. He said that after he builds the "Herpstat Pro", the next model will have a humidity controller (I guess so you could hook up one of those misting machines), so like available maybe in a year or so...
I think we're gonna hold out with just manual misting until something like a Herpstat with a humidity controller comes along. =)