I heard from Lauren at C&J. She's still waiting to hear back from the factory. Apparently she's usually only allowed to do whiskey shell orders once every 6 months or so, and she's just about to make another order -- perhaps it's the Skye 2?
EDIT: Lauren did say they have a "great deal" of dark brown shell available throughout the year. I know people signed up for whiskey, but I thought I'd throw that out there.