It is up to manufacturers to certify their firearms as compliant with the AG's regs! The AG does not approve or maintain a list of approved firearms, they only go after those products that they find not to be in full compliance.
One of the guys I know at S&W who knows these things last told me to expect shipments to begin this month. He also said that there are a LOT of pre-paid orders that need to be filled before any civilian shipments will be made.
I have not heard any updates since last month, so I don't know how on-track they are.