sepzilizations?

why halo 4 standard edition does not have all sepezilizations?

I think it’s the first time someone made this question. OP, this is a mystery to us all.

What are “sepzilizations”? If you have them, I suggest seeing a doctor.

There were two specializations included with the standard edition, with the others planned to be made available over time. However, those with the LE or a code can get early access to other specializations.