Bethesda just announced that Free Update 3, arriving this month, will include Deathmatch and Private Matches.
Deathmatch brings free-for-all mayhem to DOOM’s fast-paced multiplayer, while Private Matches allow you and your friends to create private multiplayer matches where you select the maps and modes. You’ll also be able to adjust settings like the time limit, score limit, or turning demons and power weapon off or on.