Missing Gametypes?

Does anyone have any news on when doubles, snipers, big team, objective, multi-team, or any other playlists are coming to Halo 5? I am enjoying the game quite a bit, but it just feels like it’s missing a lot without a lot of those

I dont know about the rest but I think big team is going to be added when forge is in december

Big Team Battle. A war zone slayer would be nice.