(from the Silverlight 5 download package)
Improved media support
Low Latency Audio Playback
Variable Speed Playback
H/W Decode of H.264 media
DRM Key Rotation/LiveTV Playback
Application-Restricted Media
Improved Text support
Text Tracking & Leading
Linked Text Containers
OpenType and Pixel Snapped Text
Postscript vector printing
Performance improvements for Block Layout Engine.
Building next-generation business applications
PivotViewer
ClickCount
Listbox/ComboBox type-ahead text searching
Ancestor RelativeSource Binding
Implicit DataTemplates
DataContextChanged event
Added PropertyChanged to the UpdateSourceTrigger enum
Save File and Open File Dialog
Databinding Debugging
Custom Markup Extensions
Binding on Style Setters
Silverlight 5 performance improvements
Parser Performance Improvements
Network Latency Improvements
H/W accelerated rendering in IE9 windowless mode
Multicore JIT
64-bit browser support
Graphics improvements
Improved Graphics stack
3D
"Trusted Application" model
Multiple window support
Full-Trust in-browser
In-browser HTML support
Unrestricted File System Access
P/Invoke support
Tools improvements
Visual Studio Team Test support
Read more: John Papa
QR: