Hi Sean,
You can use Exchange Online, SharePoint Online, Lync and Office 2010 professional plus in Office 365 for enterprise (Plan E).
For detailed information about services in Office 365, please download service description about Office 365 from the link below :
Office 365 for Enterprise Service Descriptions:
http://www.microsoft.com/en-us/download/details.aspx?id=13602
Thanks,
Linda Wang
