The instrument, gondola, and equipment has been shipped to the NASA balloon center in Palestine, Texas for several weeks of testing and preparation.  In mid-February, COSI will be air-shipped to New Zealand for a launch, which is scheduled for mid-April.  You can follow COSI’s progress on Twitter (@COSIBalloon) at cosi.ssl.berkeley.eduand http://cosi.ssl.berkeley.edu/blog/