As you've probably heard, Silverlight 2.0 Beta 1 is out. You can get it from Silverlight.Net. And Bill Reiss is starting another great tutorial series on Silverlight games.
I see a lot of breaking changes (as documented on MSDN), and I'll blog more about my adventures upgrading. One change is that it seems like you need Absolute urls in a few more places (like for accessing xml files or images). Because I like to think in terms of relative urls, here's an easy utility to convert relative to absolute. It should handle both file paths (file:///aaa) and web (http://aaa).
public static string GetAbsoluteUrl(string strRelativePath)
if (strRelativePath.StartsWith("http:", StringComparison.OrdinalIgnoreCase)
|| strRelativePath.StartsWith("https:", StringComparison.OrdinalIgnoreCase)
|| strRelativePath.StartsWith("file:", StringComparison.OrdinalIgnoreCase)
strFullUrl = strRelativePath;
//relative, need to convert to absolute
strFullUrl = System.Windows.Application.Current.Host.Source.AbsoluteUri;
if (strFullUrl.IndexOf("ClientBin") > 0)
strFullUrl = strFullUrl.Substring(0, strFullUrl.IndexOf("ClientBin")) + strRelativePath;
More to come soon...