We announced the round-the-world, round-the-clock hackathon a couple of weeks ago, and dozens of groups on six continents (come on Antarctica!) have already signed up. With one week to go before it kicks off, we wanted to give a few more details:

The official sites are filling up, but there’s still some space available. Sign up for New York, San Francisco, Paris, or Tokyo.

We’ve lined up an amazing roster of presentations and tons of speakers for those in attendance. Foursquare developers will also be on hand and online to answer all your questions!

We’ve updated the prize list (with even more to come). There’s some really exciting stuff, but nothing more striking than the new hackathon title belt.

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