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Whats new in Visual Studio 2015

Single sign-in

You, like many other developers today, take advantage of multiple cloud services when developing your applications.

For example, you've probably added a cloud backend to your applications to store data, stored your source code in the cloud, or published an application to a store. In the past, each of these services required a separate sign-in process, and each service managed the signed-in user state separately.

With this release, reducing the authentication prompts required to access many integrated cloud services in Visual Studio. Now, when you authenticate to the first cloud service in Visual Studio, will automatically sign you in, or reduce the authentication prompts for other integrated cloud services.

CodeLens

In CTP 6, you can now see the history of your C++, SQL, or JavaScript files versioned in Git repositories by using CodeLens file-level indicators.

Code Maps

When you want to understand specific dependencies in your code, visualize them by creating Code Maps.

Visual Studio Emulator for Android

In CTP 6, the Visual Studio Emulator for Android now supports the following:
OpenGL ES
Android Version 5.0 (Lollipop, API Level 21)
Camera interaction using image files or your webcam
Multi-touch input

Custom Windows Layouts

This feature comes in handy if you develop on multiple devices. Say for example that you use a Surface Pro to develop on your train ride home and a 23″ monitor during the day. You can quickly switch between devices by going to Window -> Apply Window Layout and selecting one that you created earlier.

Better Code Editor

The code editor has been replaced with “Roslyn” to give you a new and improved code editing experience. Light bulbs are shown when you need to include fixes to your code or refactor it. Whenever you see a light bulb appear, then click it and it will give you suggestions based upon the code it has analyzed.

What is .NET Core 5 and ASP.NET 5 within .NET 2015 Preview
http://blogs.msdn.com/b/cesardelatorre/archive/2014/11/18/what-is-net-core-5-and-asp-net-5-within-net-2015-preview.aspx

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