This is certainly a surprising change, where it looked as though support for the Revolv hub would continue without missing a beat, until what we hear of it today. Of course, this eventuality is not surprising, either, as the Revolv hub had not gone on sale for quite some time now, and neither did the iOS app pick up any kind of update since February last year.
If there is one thing that is highlighted here, it would be the potential risk that comes with purchasing devices that happen to rely on backend services, as the company that released the device might one day decide to give up on it and quit supporting the server bills. Of course, it is also another example of a botched early adopter experience, too.