Microsoft has released a new version of Office Mobile. Version 6.1 comes with a number of improvements: Compatibility with Microsoft Office 2007 which introduced the new Open XML file formats, the ability to create rich charts in Excel Mobile, the use of SmartArt and Themes in PowerPoint Mobile and the ability to view the contents of compressed (zipped) folders using Zip Mobile.
The update is not a ROM upgrade and will require that you install it to main memory or to your storage card.
The latest version of Office Mobile is available for Windows Mobile 5.0 (with the Messaging and Security Feature Pack – look for a build number higher than 14847) and Windows Mobile 6. Best of all, the upgrade is free if you already have Office Mobile on your device.