.NET Framework 4.5 Developer Preview

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		What's New in the .NET Framework 4.5 Developer Preview Learn about key features and improvements.
		Windows Dev Center Download the Windows Developer Preview and developer tools to start building apps now. View the Windows Developer Preview guide, samples, forums, documentation, and other resources for all the information you need to get started.
		Visual Studio 11 Developer Preview Check out the downloads and technical information available for the developer preview.

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See what's new What's New in the .NET Framework 4.5 Developer Preview Application Compatibility in the .NET Framework 4.5 Developer Preview Watch technical sessions from the BUILD conference What's new in Visual Studio 11 Lap around the Windows Runtime Using the Windows Runtime from C# and Visual Basic Learn about Metro style apps .NET for Metro style apps overview .NET for Metro style apps reference Building your first Windows Metro style app with C++, C#, or Visual Basic Creating Windows Runtime Components for JavaScript, in C# and Visual Basic See list of known issues