I noticed this weekend when I went down one long street that goes for several miles, there seem to be a lot of AEL 115 fixtures that looked new and shiny. I think a lot of AE Model 25 and Westinghouse 4th gen OV-20 got replaced recently along that road or something, unless I just never noticed before. I also saw one AEL ATB0 there and then next two it were two or three new looking AEL 115.

Some utilities refusing to pay the LED prices and buy the unproven fixtures.

Possibly. My town uses AEL LED ATB2 for streetlights at some intersections where there were no lights before. But for replacements they seem to always use the AEL 115. Like I said I did see just one AEL LED ATB0 had replaced a older streetlight, but just in that one spot. Or maybe there wasn't one there before, either.

But I haven't heard any plans to convert to LED, only for new installations they use it.