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Office Mobile 6.1 is an upgrade to Office Mobile applications on Windows Mobile. The new upgrade supports the new Office 2007 file formats.Microsoft Office 2007 introduced new Open XML-based file formats for Office applications. These new file formats reduce file size, improve security and reliability, and enhance integration with external sources.

To allow Windows Mobile users to work with Office documents created in the Open XML formats, Microsoft has developed an upgrade for Word Mobile, Excel Mobile, and PowerPoint Mobile applications. This upgrade to the Office Mobile applications allows viewing and editing of Word documents and Excel workbooks and viewing of PowerPoint slideshows created by using Microsoft Office 2007.

Download: Microsoft Office Mobile 6.1: Upgrade for Microsoft Office 2007 file formats

Yesterday, Microsoft quietly updated its mobile productivity suite to support Office 2007 file formats. What took Microsoft so long?
With all Microsoft's push for OOXML (Open Office XML) standardization, Windows Mobile support would sure seem like a no-brainer. But it took Microsoft quite awhile to get out the support, which is now available.

The new Office Mobile 6.1 supports documents created in 2007 versions of Excel, PowerPoint and Word. There's even compression support for those rascally Office .zip files.
The release has important symbolic significance, coming a whole two days before the anniversary of Office 2007's release to enterprises.

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