Last week amid all the hardware releases, Microsoft also released a CTP of the next update for Visual Studio 2015. This release includes support for Edit and Continue in C++ Windows Store projects, the C# Interactive debugging window, and a pull request hub in the Team Explorer window.
Team Explorer now features a new Pull Requests hub where you can see the list of pull requests that you’ve created, as well as the pull requests that others have assigned to them. We’ve also improved the Create Pull Request experience so you can publish branches and create pull requests in a single action. — Visual Studio Blog
For more information on the contents for Visual Studio 2015 Update 1 CTP, click here.