I'm aware that a subset of WinRT is a modified Silverlight 5 as explained in this answer. As someone with knowledge about the Silverlight API it would be very useful to know what SL features are actually missing. I know about the WinRT Genome Project, which tells me that it will be little - but not what it actually is. Wading through the difference lists is tedious and also potentially misleading, as some members or classes might simply be renamed.
Does somebody know of a concise list of missing SL features in WinRT?