The first version, called Office 365 Home Premium, will be aimed at individual consumers and families and include 20GB of storage in the company's Skydrive cloud storage service, as well as 60 minutes of Skype world minutes per month.

The second version, Office 365 Small Business Premium, is, as its name indicates, for small businesses, and includes business-grade email and calendaring and high-definition web conferencing.

Finally, Office 365 ProPlus is for enterprises and comes with additional features designed for IT departments and large companies.

A Microsoft spokeswoman didn't immediately explain how these new Office 365 bundles will fit in, or possibly replace, the existing Office 365 editions available for the past year.

Those interested in giving the new Office suite a test drive can access it at http://www.microsoft.com/office/preview/en.