Customers using SBS7 will also have the opportunity to view, edit, and share Microsoft Office documents online with SharePoint Foundation 2010 and Microsoft Office Web Apps. As the online companion to Microsoft Word, Microsoft Excel(R), Microsoft PowerPoint(R), and Microsoft OneNote(R), Office Web Apps gives users the freedom to access documents from virtually anywhere.
Well..kinda… if you have a Office 2010 VL license per my read.
Office Web Apps for Microsoft SharePoint 2010 Products – To the SharePoint – Site Home – TechNet Blogs:
Business customers licensed for Microsoft Office 2010 through a Volume Licensing program can run Office Web Apps on a server running Microsoft SharePoint Foundation 2010 or Microsoft SharePoint Server 2010.