The Kindle Keyboard Software Update, Version 3.3, adds four key features:
- The ability to store personal documents to your Kindle, for viewing anytime and on any supported Kindle app or device.
- Whipersync for personal documents. This automatically synchronizes your last page read, bookmarks and annotations for personal documents, not including PDFs.
- Kindle users can now purchase, view, and redeem AmazonLocal deals straight from their Kindles.
- A Voice Guide shortcut: you can now quickly turn on Voice Guide, which reads aloud menu options and content listings, by holding the Shift key and pressing Spacebar.