They're new, rather rare to the hobby. My LFS had some about 2 years ago, never again. They were all WC, like most of this species, but people are now starting to breed them. I have 6 Juvies. They grow so slow. She only gives birth once a month (if she has been mated with by an actual male), and then one baby pops out, fully formed. Her oldest offspring which is about 1 year old now, is about half her size.
http://www.jupiteraquarium.com/snail.html^Those are some of the known species so far.