The following appeared on the developer’s website.
Q: Is double team going to be on the beta?
A: Wait, I’m not sure what you’re saying. You’re trying to claim that Double Team might go into the Beta next week? Wow. That would be awesome.
If this new mode is released, many fans are expecting Bungie to also release a smaller map to accommodate the four players, as all of the available maps are made for much larger parties. While this doesn’t seem likely, especially since the close of the beta is right around the corner, it would be a brilliant move by Bungie to revitalize interest in the beta. We’ll keep you posted with news as it becomes available.