EDIT #2: Sorry, I thought about something else, is this going to replace the existing STARs (IS, XL, 4000)?
I guess that depends on the cable companies involved. Can they be
forced to upgrade their equipment? I doubt it. Otherwise, it would probably have happened by now. As has been said before, the WeatherStar III was discontinued only by FCC order, which meant there was no question about it.
That said, those stuck with legacy systems will probably be missing out on an awful lot, even more than they're missing now. As it is now, they're stuck with the national LDL, and they only get to see their own local weather during local forecast segments (whether full-screen or a full screen over the squeezeback).