There aren't very many times where you can get in on the ground floor of something and have a shot at really putting out something huge on a platform. The iPhone proved that anyone can make an app that sells well and launches a new career for someone. Now we've done the same at Amazon for the Kindle. Make sure to sign up now to get notified when we officially release the Kindle Developer Kit next month! The full PR can be found here.

KDK Limited Beta Coming Next Month

Submit your e-mail address to get notified when the limited beta starts next month. Participants in the limited beta will be able to download the Kindle Development Kit, access developer support, test content on Kindle, and submit finished content. Those wait-listed will be invited to participate at a later date as space becomes available. The Kindle Development Kit includes sample code, documentation, and the Kindle Simulator, which helps developers build and test their content by simulating the 6-inch Kindle and 9.7-inch Kindle DX on Mac, PC, and Linux desktops. We are excited to see what you invent for Kindle.

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. Kindle active content must be priced to cover the costs of downloads and on-going usage.

Pricing Options

Active content will be available to customers in the Kindle Store later this year. Your active content can be priced three ways:

• Free – Active content applications that are smaller than 1MB and use less than 100KB/user/month of wireless data may be offered at no charge to customers. Amazon will pay the wireless costs associated with delivery and maintenance.
• One-time Purchase – Customers will be charged once when purchasing active content. Content must have nominal (less than 100KB/user/month) ongoing wireless usage.
• Monthly Subscription – Customers will be charged once per month for active content.

Active content applications have an upper size limit of 100MB. Applications larger than 10MB will not be delivered wirelessly but can be downloaded from the Kindle Store to a computer and transferred to the user's Kindle via USB.

Developer Guidelines

Voice over IP functionality, advertising, offensive materials, collection of customer information without express customer knowledge and consent, or usage of the Amazon or Kindle brand in any way are not allowed. In addition, active content must meet all Amazon technical requirements, not be a generic reader, and not contain malicious code.

We will work to refine the above guidelines throughout the beta.