[Update] It's Kojima.
There are people in the VIP section of the Konami party wearing Phantom Pain/Moby Dick Studios t-shirts.
— Alex Rubens (@alexrubens) December 8, 2012
[Update] Yeah, we hear you. "Joakim" is a rearranged spelling of "Kojima". All sorts of things point to this being some kind of a surprise reveal for a Metal Gear Solid game. Fine. Here's how this outfit describes itself on its own page.
Moby Dick Studio is a game developing company operating out of Stockholm, Sweden. Moby Dick Studio was founded by CEO Joakim Mogren who after years of working for a major American developer brought together people out of various game studios from around the Scandinavian area to start something new.
Our goal is to deliver an uncompromising, exciting and touching game experience to people all around the globe.
We will shortly be disclosing information regarding our first major release.
That's the only page with anything on it. Tabs for an image gallery and studio are coming soon.
And, all the chatter backstage at the VGAs seems to hint strongly that this is a teaser for the next Metal Gear game.
Moby Dick Studio [Official Site]