This mysterious trailer has popped up on the Spanish PlayStation Blog for a game called Emagon (not to be confused with Eragon!). The Google Translate version of the post refers to the game (if it even is a game) as their “best kept secret,” and says there will be more information on December 5.
This is just before the PlayStation Experience out in Las Vegas, Nevada this weekend, so hopefully Emagon will start it off with a bang.