After reviewing the UI design guidelines, re-theming the application, and submitting on Sunday, the application was approved about 24 hours later. It’s now live on the marketplace!
You can download it by clicking here if you have the Zune software installed, or just navigating to Marketplace > Books & Reference > Reference, or of course, just searching the marketplace for “Khan Academy”.
This has been a great learning experience, and I hope to continue working with the Khan Academy to iterate and improve on the application based on user feedback. If you do have feedback, please don’t hesitate to leave a comment, email me, or create a discussion on the codeplex site. And of course, Rate and Review the application after you download it