Finally, the name is out. ... Microsoft Office 365, the company’s next generation in cloud productivity that brings together Microsoft Office, SharePoint Online, Exchange Online and Lync Online in an always-up-to-date cloud service.

Here is hte Press Release...

http://www.microsoft.com/Presspass/press/2010/oct10/10-19Office365.mspx?rss_fdn=Press%20Releases