System X Upgrade In Progress:We can follow the progress of the benchmarking in this PDF (Table 3: Highly Parallel Computing), which is frequently updated by Dr. Jack Dongarra, one of the authors of the Top 500 Supercomputer Sites list. Public tours of the Terascale Computing Facility also begin today.
* Assembly - Completed!
* System Stablization - In Process
* Benchmarking - In Process
For those of you interested in the history of System X, there is a good article about it by Virginia Tech here (in which ironically they credit Dell for planting the idea in their heads), and a video by Apple here.