SSDT January 2014 was released today, main benefits being it supports SQL Server 2012 Parallel Data Warehouse and Parallel Data Warehouse Appliance Update 1. What this release loses is the support for Visual Studio 2010. According to the link here, “We will no longer update SSDT for Visual Studio 2010. Projects and DACPACs are fully compatible across shells. Please download the toolset for VS2012 or VS2013 using the links above for continued updates.” What it gains, it seems, is support for Visual Studio 2013 and an interesting new reference as there is a link to “Download Visual Studio 2013 with SQL Server Tooling“