They've also done that in Fontana as well. They replaced some wood poles with steel. What's odd is SCE (the utility company here) didn't do the work but instead hired some company to do it.
Same here, the co-op here is having Pike Energy do the work. They also have been putting in new wood poles and wires for Duke Energy too, and I think they did the switched out the GE M-400s near my house with AEL LEDs too. (At least I saw their trucks in the area when it was happening, so I assume they did the work).