According to DigiTimes, the units "are expected to be used for testing." So does that mean 60,000 people will be participating in the pilot program? Honestly...who knows? It's possible that quantity could be solely for the test program, or a select number could be reserved for in-house at Google. (Hopefully ZDNet's Christopher Dawson will selected as one of the lucky participants!)
But that figure is certain to grow whenever the Cr-48 is cleared for an official launch.