The following resources on the Office 365 community were pointed out to me recently and I think they are worth passing along:

Each link contains a rolling feed of everything new and notable for Office 365. For example, in the past couple months, Office 365 for enterprises released some improved functionality for the service health dashboard, an online version of Microsoft Dynamics CRM, Lync support for some mobile clients, and so on.

Check back every so often to find the latest improvements and features for Office 365.