Word 2007支持格式：
Word Document (.docx) - 默认格式
Word Macro-enabled Document (.docm)
Word Template (.dotx)
Word Macro-enabled Document Template (.dotm)

Excel 2007支持文件格式：
Excel Workbook (.xlsx) - 默认格式
Excel Macro-enabled Workbook (.xlsm)
Excel Template (.xltx)
Excel Macro-enabled Workbook Template (.xltm)
Excel Binary Workbook (.xlsb)
Excel Add-in (.xlam)

PowerPoint 2007支持格式：
PowerPoint Presentation (.pptx) - 默认格式
PowerPoint Macro-enabled Presentation (.pptm)
PowerPoint Slide Show (.ppsx)
PowerPoint Macro-enabled Slide Show (.ppsx)
PowerPoint Template (.potx)
PowerPoint Macro-enabled Presentation Template (.potm)
PowerPoint Add-in (.ppam)

并非所有格式均向下兼容，仅有以下格式将兼容Office 2000：
Word Document (.docx)
Word Macro-enabled Document (.docm)
Excel Workbook (.xlsx)
Excel Macro-enabled Workbook (.xlsm)
Excel Template (.xltx)
Excel Macro-enabled Template (.xltm)
Excel binary Workbook (.xlsb)
Excel Add-in (.xlam)
PowerPoint Presentation (.pptx)
PowerPoint Macro-enabled Presentation (.pptm)
PowerPoint Slide Show (.ppsx)
PowerPoint Macro-enabled Slide Show (.ppsm)
PowerPoint Template (.potx)
PowerPoint Macro-enabled Presentation Template (.potm)

除此之外，Office 2007还将支持PDF文件以及XPS格式输出。

2006.03.14
Office 2007 Beta1 技术更新版发布
Office 2007 Beta 1 技术更新版已经在http://beta.microsoft.com/上发布.
包括：
Microsoft Office Business Contact Manager 2007
Microsoft Office Groove 2007
Microsoft Office Groove Data Bridge 2007 (x64)
Microsoft Office Groove Management Services 2007
Microsoft Office Groove Relay Server 2007 (x64)
Microsoft Office OneNote 2007
Microsoft Office OneNote Mobile 2007
Microsoft Office Outlook 2007 Connector
Microsoft Office Professional Plus 2007
Microsoft Office Project Professional 2007
Microsoft Office Select
Microsoft Office Server 2007
Microsoft Office SharePoint Designer 2007 (formerly FrontPage)
Microsoft Office Visio Professional 2007
Microsoft Office Windows SharePoint Services 2007 (x64)
Microsoft Visual Studio Tools plug-in for Microsoft Office InfoPath 2007