I think that unless the dual camera is absolutely amazing, then everyone is best to just wait to see if Apple can make a modern large iPhone with next years do-over.
And even if the dual camera is amazing, I still think people should just wait to see if Apple can make a modern large iPhone as good as the Note 5 next year.
I'm way past due with two upgrades on my Verizon plan, but I'm waiting it out. There is nothing my 5s cannot do, and do well that the 6 series can.
..well except for having a larger screen. But even then, I want a larger phone done right, not just a lazily blown up iPhone 5 with huge bezels and honking forehead and chin.
Just wait it out people...