I just checked Future Shop....if you look at any of the 6s they show that plenty of stores have stock. If you check under ANY 6+, no stores have stock.
From my buddy at The Apple store this morning, said they had a super limited amount of Ip6+. I think it's safe to say if Apple can't fill it's own stores to survive the first hour of sales for that version, other places are probably having the same problem.
I'm third in line for mine and I havent moved since the day i reserved. I am leaning that those are cancellations as opposed to people moving up the line.