Question about halo cea Maps

Will the maps be avaliable (DLC) for people who wont gonna buy halo cea?
or i have to buy halo cea to play the maps?

They will but a while after anniversary comes out.

I believe in an earlier Sparkast they stated they would be downloadable at a later date, but I could be mistaken.

Yes, they’ll be put up as DLC (I don’t know if for free or not) around the same time as CEA is released.