PlayStation Move sub-controller had its naming day at the FCC and marched off proudly as the "Navigation Controller." Mazel tov. The Sony America website has been updated to reflect the change. Meanwhile, the Wii Nunchuk controller is sipping its scotch in the corner and laughing maniacally over (somehow) having the cooler name.
The next major public opportunity for the "Navigation Controller" to shake and Move its assets will be at Sony's E3 press conference, slated for June 15.
Source -- PlayStation Move navigation controller [Sony]
Source -- FCC