Thought of spreading this thrilling announcement recently published that SP1 for 2013 product is on its way and expecting to be released early next year.
Service Pack 1 (SP1) for the 2013 set of products including Office, SharePoint and Exchange. SP1 will deliver performance enhancements, feature updates and improve compatibility with Windows 8.1.
This will be applicable to both on-premises and online versions, and more details are expecting soon. Also i am trying finding any news related to Project Server, if SP1 is applicable to Project Server 2013 as well, and will update through my blog once i find something.