Not only the 6+..The 6 too.
This problem is real, and it is not the users fault. Please people, get real.
I carry my phone in my front pocket like millions of others.
I have an iPhone 6, not the 6+. I just checked and it is slightly bent. My wife's iPhone 6 is also slightly bent. I am not a hipster with tight pants. I am not overweight (some imply weight is the cause. I am a 54-year-old man at 5' 10' and 175lbs) and a person who has had every iPhone since launch day along with two early androids. I have never had any phone bend in my pocket..ever.
It is completely reasonable and common-place to carry a phone in your front pocket. The phone should not bend..period.
Lay the phone on a flat surface and rock it it from the corners. Both of ours teeter from top left, to bottom right. Unfortunately, I traded my 5s in at VZW and can't even go back under the 2 week return policy.
Apple, I am disappointed and upset.