Or more specifically, refreshed Mac Pros with a slight speed bump to the base SP quad-core (2.8 to 3.2GHz) and a cheaper entry point for the DP 12-core (2.4GHz as base). Oh, and they axed the DP 8-core model.
Other than that, it's the exact same machine and architecture (Westmere) while everyone else (Dell, HP, etc.) is offering Sandy Bridge Xeons (for shame, for shame).