"NOTE: SxS-1 media is currently only compatible with the new XDCAM EX camcorder models including the
PMW-EX1R, 350L and 350K models. A downloadable firmware upgrade, scheduled for release in spring 2010, is
required to enable SxS-1 media to be used in the PMW-EX1, EX3, and 10MD hardware models. The upgrade will be
available on the Sony Pro Media / Professional Hardware websites. Users that own a PMW-EX30 deck may need to
send their deck to a Sony Service Center for the upgrade."
So most will have to wait till spring to use them.