Building an Epic Campaign
From the article
As we near the October 27 release for Halo 5: Guardians, we are busily polishing every part of the experience and preparing to share the fruits of our labor with the world. Earlier this year we talked about our commitment to multiplayer, with two distinct ways to play in our Arena and Warzone experiences. But we know for many fans, what they love most about Halo is our universe, characters and story.
Source: halowaypoint.com