Silverlight 5 Beta release and available for downloadMicrosoft released Silverlight 5 Beta version.
You can freely download the version using the link Silverlight 5 Beta
Below are the few new features provided by Silverlight 5 Beta.
1. XAML Debugging with breakpoints for binding debugging
2. Implicit data templates for easy UI reuse
3. Double (and multi) click support
4. GPU-accelerated XNA-compatible 3D and immediate-mode 2D API
5. Low-latency sound effects and WAV support
6. Real operating system windows and multi-display support
7. Significant performance improvements, fixes and much more