Nice summary from TechSoup of Microsoft Office 2010, and enhancements from the 2007 edition. The one line that really caught my eye.

There are six versions of Office 2010: Starter, Home and Student, Home and Business, Standard, Professional, and Professional Plus.

I haven’t got the time to do the math, but consider the variables…
6 versions of Office 2010
2 versions of Office Web Apps (personal and enterprise)
2 or more versions of SharePoint
2 versions of Word files… doc. and .docX
Employees working with previous versions of Word and Office 2007, and Office 2003
Updates for all the different versions.

equals =

Support nightmare.

It really shouldn’t have to be this difficult or complex.