Bethesda teases fans with just a tweet

Bethesda announced today that a full trailer is coming on November 5.  This tease was tweeted by Bethesda that came withe picture above, and its pretty much anybody's guess to what this is. I'll put my money on a new Skyrim DLC though since it was recently rumored that dragon mount asset files were found on the latest Skyrim patch. That, and I highly doubt Bethesda is nowhere near done releasing DLC for Skyrim. What do you guys think?