So... they realize how enormous the demand is and are working on getting the course online. However, PWB is still their most popular course by far, and the Kali revision is the project they're focusing on at the moment. This is just speculation on my part, but I would be surprised to see it in 2013.
I was honestly surprised at how small the company is, and it's seriously impressive how much they put out, especially for free (Kali, MSF Class, and ExploitDB). They definitely deserve a ton of respect for all they do. Despite deriving pleasure from seeing you suffer, they were some of the nicest people I've ever met in infosec, and they were super cool to hang out with. Although, muts is aware of how miserable he's made people's lives with his courses, and he carries around a miniature baseball bat for self defense
Everyone I talked to that has taken the course, or was taking the course, said it was fantastic (as expected), so I'm eagerly anticipating this more than ever.
The day you stop learning is the day you start becoming obsolete.