With the release of Windows Phone 7.5 (code-named “Mango”), Office Hub support for SharePoint Online in both Office 365 for enterprises and Office 365 for professionals and small businesses plans is now available. If your Windows Phone has not yet been upgraded to version 7.5, please contact your carrier for details on when this will occur. 

For the steps to set up your Windows Phone 7.5 with the Office Hub, watch this video: