Bungie Teasing Surprise Destiny Announcement

Bungie is teasing some sort of special announcement related to Destiny, and according to a Tweet last night from the developer, it looks like we'll be hearing more about it later today.

 

 
What could Bungie possibly be teasing? A new mode? The reveal of a new planet that players will be able to explore? Your guess is as good as mine! Nevertheless, feel free to comment below with your thoughts on what might be revealed.