Daniel,

You're referring to a scrubber that is called a hydrophobic scrubber. They are not new.

Cis-Lunar's MkVP had a membrane system blocking water ingress, hence the hydrophobic designation.

I believe the Boris also has a hydrophobic scrubber cannister, and the new Cis-Lunar MkVI will have an available option hydrophobic that allows the use of the more efficient lithium hydroxide absorbent.