The reps don't know release dates of OS updates or new devices. I used to get those calls all the time and no matter how many times I'd tell people, they would say, "Oh you aren't allowed to say, huh?".
Microsoft is leaving it up to the carriers to release the software. I don't get why they need to make any modifications, or test over a lengthy period, but they can't seem to get enough of that.
Anyway, I figured I'd say something early on in the thread, but everyone is free to discuss of course.
The whole "Contact your carrier" bit is a dead end. Frontline reps know nothing regarding this. You're better off going into settings and checking for updates every so often (Once a week?) so you don't waste your time.
Actually, you are probably just as well off sending an email instead, I've noticed they seem to be a little more informed about things, or because they can do more research not having to be live on a call.