The R580 will also need a master card but maybe the R600 which is slated for next year may get rid of the master card concept.
It takes approximately two years to finish a graphic chip and a graphic card and ATI didn’t even consider using dual cards in the same setup as an option. Nvidia opened the dual card doors for everyone and ATI just had to react. It took ATI a long time to do this - almost a year from its initial plan. ATI still has to ship Crossfire boards and we are expecting them in the next few weeks.