6v6 slayer in halo 4?

Is there going to be a 6v6 or a 5v5 slayer mode in halo 4? Or is there just going to be 4v4 and big team slayer? Because im pretty sure I say or heard something about a 6v6 gametype in halo 4 war games.

dominion is a 6v6 gametype.

Is that it or is that all you know?

That’s all I/we know at this point.