Silverlight/WPF/WP 7 Integration

Has anyone heard as these tools get better and better if they are planning on either creating a more reusable code-base between all of these products or at least more of a common code-base? It seems how close these products are, that some sor开发者_开发百科t of shared component feature should be available?

Maybe that's a feature in the upcoming Silverlight 5.0?

Thanks.

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The Portable Libary Tools project was announced at PDC last year. You can view the details of the session by Shawn Burke in the 3-Screen Coding: Sharing code between Windows Phone, Silverlight, and .NET session. The CTP of the tool s(see first link) was released in January.