The Kindle Development Kit enables developers to build active content that leverages Kindle's unique combination of seamless and invisible 3G wireless delivery over Amazon Whispernet, high-resolution electronic paper display that looks and reads like real paper, and long battery life of seven days with wireless activated. For example, Handmark is building an active Zagat guide featuring their trusted ratings, reviews and more for restaurants in cities around the world, and Sonic Boom is building word games and puzzles.
Additionally, the revenue sharing was announced, "User revenue will be split 70% to the developer and 30% to Amazon net of delivery fees of $0.15 / MB. Remember that unlike smart phones, the Kindle user does not pay a monthly wireless fee or enter into an annual wireless contract."
Q. Can I use my nook while traveling abroad?
A. Yes, when you travel abroad, you can read any files that are already on your nook. You can connect to Wi-Fi hotspots that do not use proxy security settings, such those commonly used in hotels, and download eBooks and subscriptions already in your online digital library. You cannot, however, purchase additional eBooks and subscriptions.
Q. Will new issues of eNewspapers and eMagazines be downloaded to my nook while I'm traveling?
A. Yes, if you are traveling in the United States, or if you are abroad but connected to a supported Wi-Fi hotspot, new issues are delivered to your online digital library in both cases. When travelling abroad without Wi-Fi access, new issues are not downloaded to your nook (automatically or manually).
So no, it isn't international.
Nothing succeeds like excess. -- Oscar Wilde