I wasn't even aware they ever _really_ released the B60. When I got bored of paying attention it was ~months after "release" and they just didn't exist to buy. I do technically see them on ebay, so yeah apparently they're out there.
The B60 was released but strictly on a B2B basis until a couple of months ago. The B60 dual, a much rarer bird, was scalped heavily enough to be unobtainable.