$7000 burning a hole in your pocket? Apple's 12-core Mac Pros have been added to the store just now. Minimum spec includes two 2.66GHz 6-core Xeon Westmere processors and 1TB of storage.
Minimum specs start at 6GB of memory, an 18x double-layer SuperDrive and ATI Radeon HD 5770 with 1GB GDDR5. The overall design hasn't changed since the previous incarnation, with the biggest overhaul happening inside the aluminium case - the 45nm Nahalem processors have been ramped up to 32nm Westmere processors.
Order now, and it'll ship in 7 - 10 business days. [Apple]