Windows Identity Foundation SDK 4.0 package has been released. “The updated WIF works with .NET Framework 4.0 and Visual Studio 2010. WIF enables .NET developers to externalize identity logic from their application, improving developer productivity, enhancing application security, and enabling interoperability. Enjoy greater productivity, applying the same tools and programming model to build on-premises software as well as cloud services. Create more secure applications by reducing custom implementations and using a single simplified identity model based on claims. Enjoy greater flexibility in application deployment through interoperability based on industry standard protocols, allowing applications and identity infrastructure services to communicate via claims,” announced Microsoft. Also, Microsoft announced the complete localization support for WIF SDK 3.5. Following are languages: French (fr-FR), German (de-DE), Japanese (ja-JP), Spanish (es-ES), Italian (it-IT), Russian (ru-RU), Chinese-Simplified (zh-CN), Chinese-Traditional (zh-TW), Korean (ko-KO).