At annual professional developer conference (PDC) in LA, CA was unveiled a Beta version Silverlight 4. After v3 added many new features and control v4 doesn’t change the pace and releases many new features.
Not only the new version produces 200% faster apps than v3 but continue to invest in Out-of-browser support which will be game changer in the way desktop applications are built. Now trusted applications has access to MyDocuments, MyMusic, MyPictures and MyVideos folder (or equivalent for non-windows platforms) but also has access to external programs as word processor or e-mail client as well as COM components.
Thus the programming mantra – “write/compile once and run everywhere” is getting close to the reality.