Microsoft Office 365 is now available!
Personally, I think that having some storage and Office Web Apps is a great combination on its own. The fact that you also get mail & calendar (including Outlook Web Access), SharePoint Online, Lync Online, and Forefront protection, makes this an unbelievably awesome package. I think this is delivering on the "help realize potential" mission in a major way, particularly for small businesses who perhaps never had access to these capabilities in the past.
If you haven't already, check it out at https://www.microsoft.com/en-us/office365/online-software.aspx.
Enjoy!