[wicks]

Update - they'll be ready to do it in Jan:

21.175 Year of Manufacture (YOM) License Plates (CVC §5004.1)

Important Notice: New legislation expands the YOM Plate program to include 1980 and older year-model vehicles. The department will begin accepting original applications for YOM plate assignments for qualifying vehicles beginning in January 2017. This webpage will be updated with additional information during the next few months.

Year of Manufacture (YOM) license plates are any officially manufactured California license plates issued in:
1969 or prior, for autos, trailers, and motorcycles, and
1972 or prior, for commercial vehicles.
In lieu of the license plates otherwise required for the vehicle, YOM plates may be assigned to any currently registered:
1969 or older year model auto, motorcycle, or trailer of a corresponding model year, or
1972 or older commercial vehicle of a corresponding model year.
The department must determine that the YOM plates are legible and serviceable prior to assignment to a vehicle.