I read there will become a plug-in available for adding users/SSO (and this for both the P1 and E3 Office 365 subscriptions) for Small Business Server 2011 Essentials. Will the same plug-in (for both P1 and E3 subscriptions) become available for Windows Server 2008 R2?

Hello, please ask in the Office365 forum instead this one: http://community.office365.com/en-us/f/default.aspx?wa=wsignin1.0Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.