16 cores is a limit..
Ok so 4 socket servers 4 core chips..
So my Sun Galaxy boxes are out of luck... with Barcelona.
And I bet when Intel reintroduce hyperthreading on these boxes: http://www.reghardware.co.uk/2007/03/02/intel_bloomfield_to_debut_lga1366/
we'll need 32 core support..
IBM's X series and UNisys ES7000's are out of luck...
Oh well if it actually ships when they say it will - we'll see how it works of course the competition aren't standing still either...