The Empower program has recently been discontinued and replaced by this new APDD package. It's great value as always though but the available software is a subset of Empower (No TFS for example).
The most ironic thing however is that the version of Expression Studio 4 it provides does not contain Blend, the one tool that can be used in conjunction with VS for "development & design". Why include design in the title if the design tools are not going to be provided?
So much for building pretty Silverlight apps.