The upgrade to Dual Polarization is slightly ahead of schedule. I wrote here back in November about the upgrade for the Doppler Radar system at Fort Dix, NJ.
Here is a first look at a test conducted today, unfortunately there was little to no precipitation for a real test.
Please visit my original post about the Dual Pole upgrade; http://climatedriver.blogspot.com/2011/11/dual-polarization-radar.html