Amazon announced that it will be releasing a free Kindle app for Windows. The app will be available next month, but was demoed at the Windows 7 launch event. The new app for Windows will allow users to purchase books from the Kindle store and read them on their PC. Users who have an iPhone or a Kindle will be able to read books on all three platforms. Although the app was introduced for Windows 7, it will work just fine for users with older PCs, as it is compatible with both XP and Vista. However, some features will only be available on Windows 7, due to the inclusion of the new Windows Touch technology.