I was getting them pretty reliably on my 6 with iOS 9.0. It was the first time ever that the notification widget consistently showed my commute time (used to be really hit or miss. one day it would work, the next it wouldn't). And when I got in my car to leave work, i got a notification on the lock screen with an ETA to get home. It was great.
But since I got my 6s+, that all stopped? I've been having a ton of other flaky weirdness too, and every time I figure out a workaround for one bug some other issue pops up. I was having problems with the home screen rotation, got that solved but now quick actions stopped working for a bunch of apps (stock or third-party - twitter, mail, photos, voice memos, maps, and a bunch more. oh, and phone/messages used to let me jump straight to frequent contacts. now they only have "create new contact" and "new message", respectively)
I think I'll try a hail mary pass with the 9.1 beta and see if it fixes anything. If not, guess it's time to wipe and restore as a new phone