What is Halo 3 Keep it Clean?

[bakerskateboardsrule!]

i dont know wat it is? it is a new map? a new level? a new GAME? plz anser

 

[black]

currently we can not let out any information about our new project(Keep It Clean). But what we can say is that halo 3 keep it clean might be an addition to the campaign itself. it might be new maps. or is it something else?