The new version 2.4 fixes problems experienced when running the e-book reader software with Windows Mobile 2003 and Windows Mobile 2003 Second Edition.
While this version will run on all supported Pocket PC devices, Microsoft is recommending that only users of devices running these operating systems upgrade. Upgrading will not require reactivation of your Pocket PC device.
This version includes updates for known performance issues, and adds new features, including pPan and zoom capabilities for embedded graphics and screen rotation between portrait and landscape modes. The screen rotation is available for Windows Mobile 2003 Second Edition devices only.