As of March 1, 2013, Apple will no longer sell Mac Pro in EU, EU candidate and EFTA countries because these systems are not compliant with Amendment 1 of regulation IEC 60950-1, Second Edition which becomes effective on this date. Apple resellers can continue to sell any remaining inventory of Mac Pro after March 1.
Apple will take final orders for Mac Pro from resellers up until February 18th for shipment before March 1, 2013.
Countries outside of the EU are not impacted and Mac Pro will continue to be available in those areas.
In June of last year, following outrage over the lack of a real Mac Pro update, Apple confirmed to the press that it is working on new models and designs for its Mac Pro desktop that will be released in 2013.