I did an interview with Paul Bryan on the Windows Phone product team at TechEd North America about the productivity features such as Lync integration, server search, conversation view, and pinnable email folders.
After covering the productivity features, we dive into why an enterprise might want to support Windows Phone over the competition such as Android or iPhone. We get into the new security and management capabilities being supported such as complex (alpha-numeric) password support, Information Rights Management support for protecting e-mails and Office documents, support for access to hidden Wi-Fi networks, and Exchange Active Sync management capabilities with System Center Configuration Manger 2012. Finally, we cover how Windows Phone enables companies to deploy their own applications only to their employees via the Windows Phone Marketplace.
The original video can be downloaded here: http://technet.microsoft.com/en-us/edge/why-windows-phone-in-the-enterprise