Silverlight Beta 2 Breaking Changes

"Image and ImageBrush Class Changes:
Removed DownloadProgress property (!)"

There are certainly good reasons, but:



why?

how can I get the status of an Image Control? in beta1 I could assume the ImageSource fully loaded by checking:

bool ready = myImage.DownloadProgress.Equals(1D);


Any tip for that?
Thanks in advance.

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