The Halo 5: Guardians multiplayer beta going on right now has introduced a new game type, as well as two new maps and another weapon, 343 Industries revealed
The new game is Breakout, a round-based team deathmatch in which each participant has only one life per round, and teams must win five rounds to take the match. Breakout is available on two maps, Crossfire and Trench.
The two new maps in the beta, Regret and Eden, have been added to the Slayer playlist. They are variations on two maps introduced in the beta's first week, Regret and Eden.
The new weapon is the Hydra MLRS, which 343 called "brand-new to the Halo universe." It's available in Slayer matches on Regret.