Although Microsoft has just recently made the Visual Studio 2013 Update 2 available for download, the company is now rolling out the Visual Studio Update 3 Community Technology Preview (CTP) 1 that's now available for users.
Related: New Features in Visual Studio 2013
In this CTP, Microsoft is including debugging, IntelliTrace, and testing tool enhancements. Notable improvements include the ability to debug x86 applications that are built by .NET native, along with new functionality to go directly to performance event details that are exported from Application Insights to IntelliTrace.
You can find a detailed list of improvements included in the Visual Studio 2013 Update 3 CTP 1 in the following Microsoft Support article.