Visual Studio 2013

Visual Studio 2013 (codenamed Dev12) is the ninth major version of Visual Studio, released on 17 October 2013 alongside .NET Framework 4.5.1.

Visual Studio Online
A Microsoft account can now be added to Visual Studio. This syncs all Visual Studio settings on any device containing Visual Studio 2013 or later.

CodeLens
Visual Studio 2013 introduces CodeLens References, a way to see which functions or methods are referenced by any line of code.

Notifications
Visual Studio 2013 lets the user see incoming notifications in a centralized location. This is used, for example, when an extension needs to be updated or there's a new version of Visual Studio.

Team Explorer
Team Explorer now lets the user add or clone Git repositories.