Live Code Analyzers are used to add custom error messages and warnings that appear live as you're typing, along with automatic code fixes to help you clean them up. They are available as NuGet packages that you add to your projects in Visual Studio 2015. In this video, you'll see how the FxCop analyzer package now helps you improve your code even before you build. You'll also see the Azure Code Analysis package, which teaches you best practices for building Azure apps by spotting bugs the moment you introduce them.
Windows 8.1 provides new APIs geared to high-performance list scenarios in XAML apps. In this video, Tim Heuer will provide an overview of the APIs and explain how the platform and Visual Studio tooling teams worked together to build productivity on top of the APIs. Tim will also show a demonstration of several highly-requested features now available in Windows 8.1.