I have not heard anything about a 3rd edition being released. I was hoping for some new material to be released before I started studying and took the exam, but it didn't happen. I found the material for the 2nd edition to be sufficient for studying the exam.
Does anyone know or can ISC2 assert when the (ISSAP) 3rd edition is being released?
It appears as if the 2nd edition foundation for the emerging questions, which are current though there is not a revised CBK? Is that accurate?
I think that now ISC2 have their online courses available for the concentrations (yours for the low, low price of $1,995) there's no appetite from them to update the CBKs.
My advice is to look to the suggested reference list for study material: