With Blizzcon 2013 starting tomorrow, some eager fans can't wait to see and share more of the Diablo III expansion Reaper of Souls. So they've leaked footage of the upcoming trailer to YouTube.

The video shows a very brief glimpse of Adventure Mode, Bounties, and other new features. We expect the video below to be taken down soon, so if you can't wait until tomorrow to catch a glimpse of Reaper of Souls in action, you may want to watch it sooner rather than later.