I'm interested to see what Dell puts out in the workstation market - in particular their pricing. In the past Dell workstations have been in a comparable price range to the Mac Pros, in fact Mac Pros were often cheaper for the same hardware. This time around, however, its clear that Apple has increased their profit margin by $1000 on each Mac Pro compared to previous releases. Dell could very easily sell an exactly specced machine to a Mac Pro at $1000 under Apple's price, which would certainly be interesting competition. They could also simply follow Apple's lead and boost their own profit margins up by $1000 too though.