Microsoft released updated Service Descriptions for Office 365 for Enterprise on 13 January 2012. Below, I will list the major updates to the Service Descriptions for Exchange Online and Exchange Online Archiving. Also available are the updates to the SharePoint Online Service Description.
Changes were compared with Word 2010’s Compare feature:
Microsoft Exchange Online for Enterprises Service Description
Access to Exchange Online
Transport Rules
Microsoft Exchange Online Archiving Service Description
Compliance
Multi-Mailbox Search