• Unlike Windws CE  where the phone CLR was a reduced version of the .NET CLR the Windows Phone 7 will support the full Silverlight framework. As Scott Guthrie said: “This isn’t Silverlight lite. This isn’t Silverlight different. This is Silverlight.
• ScottGu demoed the development environment – it is very similar to Visual Studio with a built-in emulator that supports multi-touch
• The development tools for Windows Phone 7 are free! Download them from here. The Windows Phone Developer Tools include Visual Studio 2010 Express for Windows Phone, Windows Phone Emulator, Silverlight for Windows Phone and XNA Game Studio 4.0 CTP
• The Windows Phone 7 ships with an extended Silverlight 3 runtime and  supports DeepZoom as well. ScottGu also announced that Silverlight 4 ships with a Pivot control – a great data visualization tool. We’ll have to wait to use Pivot on the Windows Phone 7 though until the runtime is upgraded to Silverlight 4 unfortunately.
• The Windows Phone 7 Marketplace will be a global application catalog, not restricted by regional content restrictions. Developers will receive 70% of the price for apps and games.
• Partners who have had early access to the Windows Phone 7 development tools showed off their great applications. This included:
  • A news application demo (video)
  • eBay who’ve built a cool out-of-browser lister application in just 8 weeks
  • A prototype Netflix application
  • Shazam‘s Silverlight app
  • Graphic.ly‘s comic reader using DeepZoom
  • A Major League Soccer application using push notification (video)
  • A Marionette application where ScottGu made fun of Steve Ballmer (video)
  • The Seesmic Desktop application – the entire Seesmic platform has been ported to Silverlight!
  • Demo of the Foursquare application (video)

So if these details have made you interested read a more detailed summarry of the keynote or just go and download the Windows Phone 7 development toolkit!