Microsoft is planning to deliver Service Pack (SP) 1 for Office 2013, SharePoint 2013 and Exchange 2013 in early 2014, company officials said on November 20.
Microsoft shared a partial list of some of the updates that will be part of the SP1 via blog posts on the Office and Exchange Team blogs. On that list:
Improved compatibility with Windows 8.1
Support for Windows Server 2012 R2 for Exchange and SharePoint
Support for S/MIME in OWA will be brought back in SP1. With SP1 customers will have S/MIME support across Outlook, Exchange ActiveSync clients, and OWA
Inclusion of the Edge Transport server role for Exchange Server 2013
General performance enhancements and feature updates for all the Office 2013 products
In Exchange 2013's case, SP1 is "essentially" the same as Cumulative Update 4, officials said, meaning SP1 will include all fixes included in previously released cumulative updates for Exchange 2013. SP1 will require customers to update their Active Directory schema, Exchange officials also noted.