Leffot makes this model and offers pre-sales on it. I know they just had some come in this past Fall. My impression was most of the sizes were already spoken for as pre-orders, but they may still have some sizes left and, perhaps, your size. If not, you can find out if they will order again by calling Leffot. Given its popularity, I would think it almost certain that they will reorder.
I would also check with J Gilbert since they make a lot of make-ups, including LWB, and make abundant use of waterlock soles.