From bEye the pricing has been announced.
Its $20,000 a server, about £10,000 at today’s exchange rate and $195 (£100) a CAL. Mind you that will probably end up as a straight Dollar to Pound swap!
EDIT There is no citation for this and I cant find one but is anyone has further info please leave a comment.
EDIT 2 Confirmed here with some more details on what you get for your money – A Lot!
The bad news is that shipping has been moved to second half of the year.