I realize that it has only been a week since the new phones were released (even though it feels longer already), but developers have had access to iOS8 for a bit longer than that, and (at least in my case), a lot of apps are not optimized for the new resolution on the 6+. I've updated apps that announce "upgraded for iOS8" and yet the resolution is awful as the phone has to upsize everything.
It's the one downside to the 6+ for me right now, as opposed to the 6 where the difference is barely noticeable when an app isn't optimized.
It's the one downside to the 6+ for me right now, as opposed to the 6 where the difference is barely noticeable when an app isn't optimized.