Microsoft released a completed version of Silverlight for Symbian devices and with this release they also released developers tools to build Silverlight applications for Symbian devices. These tools allows developers to run Silverlight applications on the Nokia S60 5th Edition platform. The executable file includes the Silverlight runtime for Nokia S60 5th Edition emulator, sample applications, and developer documentation. Silverlight support for Nokia S60 5th Edition devices includes the ability to view Silverlight applications in the mobile browser and the tools to build Silverlight applications that target devices. The new release is for the S60 5th edition phones, including the Nokia 5800 XpressMusic, Nokia N97 and Nokia N97 Mini, according to the Nokia Web site.
You can create Silverlight-based applications for devices by using Expression Blend 2 (free trial version), Visual Web Developer 2008 Express with SP1, or Visual Studio 2008 SP1 with Silverlight Tools for Visual Studio 2008 SP1.