Windows Mobile gets Office 2007 format support
Version 6.1 of Office Mobile finally brings support for Microsoft's Open Office XML document formats, over a year after Office 2007 was released to businesses. The update is free of charge for existing Office Mobile users; the suite costs $49.95 and runs on Windows Mobile 5 and 6.
Along with compatibility for OOXML in Word, Excel and PowerPoint, Office Mobile 6.1 includes an enhanced viewing experience for charts in Excel Mobile, ability to view SmartArt in PowerPoint Mobile, and the ability to view and extract files from compressed (.zip) folders. More information is available from Microsoft's download page.