The Silverlight browser plug-in started out back in 2006 as a project called WPF/e – Windows Presentation Foundation Embedded – or as the team also called it, WPF Everywhere. The idea was that it would ship for the browser in 2007 and then on Windows Mobile by the end of the year. Although Microsoft has demonstrated Silverlight Mobile several times since then, it's only just arriving on mobile. The Symbian beta is available now and Windows Phone Series 7 treats it as much more than an add-on; it's one of the only two ways to write Windows Phone apps. The version of Silverlight that will be on Windows Phone (that you can already try out with the emulator in the free Windows Phone Developer tools) is closer to the desktop version than you might expect (and it's hardware accelerated like Silverlight on the desktop). "This isn't Silverlight 'lite', it isn't Silverlight 'different', it is Silverlight," corporate vice president Scott Guthrie told TechRadar. It includes "all the APIs of the current Silverlight version 3 and quite a bit of Silverlight 4; it's a superset plus some extras". The difference is less about what the phone can run and more about thinking about what you need on a phone. "Pretty much all the features that we think are mobile-specific, that you'd want in the phone, are there," says Guthrie.
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