will there be two playlist "Types"?

I’m wondering if Halo 4 will be Halo 3-styled where there are two major play lists: Social and Ranked.

I really want there to be two so that way one actually affects my rank (e.g. True Skill in Halo 3) and another for me to just play.

Nobody knows for sure yet. But hopefully there will be a Ranked and Social play-list.