Along with Office 2013 SP1, the Office servers were also updated to SP1 in February 2014, including Exchange, SharePoint, and Lync.
Create an Organizational Forms Library in Exchange or Office 365
Share custom forms with all users within your Exchange 2013 organization, by publishing the forms to an Organizational Forms Library. I'll show you how to set it up.
What's New in Exchange 2013
What's new in Microsoft Exchange Server 2013, including public mailboxes, site mailboxes, and new OWA features.