If anyone's curious, I emailed Theo Wanne about it and got this response, which makes sense:
"There was a change made to the Earth (and Fire) model to give it a slightly bigger body for better ligature fit, as well as some small change to the inside for a more free, more colorful sound. The version you got is the most recent, and we realized that the website needs updating to reflect that. Sorry for any confusion!"
So there you go.
"There was a change made to the Earth (and Fire) model to give it a slightly bigger body for better ligature fit, as well as some small change to the inside for a more free, more colorful sound. The version you got is the most recent, and we realized that the website needs updating to reflect that. Sorry for any confusion!"
So there you go.