It's all bullshit. The software "fix" wouldn't change the fact that there is an actual design flaw.
Dropping calls
https://youtube.com/watch?v=_GqUG-_Daek
and there was another one with the internet speed test. Apple thinks they're clever releasing an update that makes your phone show more bars, as if that's going to cure the problem.
I got the bumper for mine and noticed a HUGE difference. It's pretty sad I had to buy a fucking accessory for my brand new Iphone to work correctly.