Specializations unavailable?

What happens once you complete Wetwork and Operator and you did not purchase the Halo 4 special edition? Will new specializations be available by then so you can continue leveling or will you just be stuck at 80?

I purchased the map pack and it did not come with the Specilizations. I believe the only way to get them is by buying the 100$ special edition is this correct and is it a single code on the back of the card?

I purchased the Halo 4 xbox, I’d expect to get them after spending 350$ on the xbox.