Borderlands Teaser Trailer: Announcement Tomorrow

Gearbox Software tweets a new trailer called Mask of Mayhem. It's widely expected they will be announcing a new Borderlands game this week at PAX East, and they do nothing to tamp down such suspicions by explicitly labeling the video "Borderlands Teaser." Even without that, it's easy to see the clip shows off characters from the shooter series, and it concludes with a link to the Borderlands Website. They make it evident this semi-mystery will be solved tomorrow, saying, "Mayhem is coming! Tune in tomorrow at 11am PDT / 2pm EDT at for Gearbox’s PAX East livestream."