If something seems off about the shots from the rear camera on your iPhone 6 Plus lately, you may not be seeing things. Apple has announced a camera replacement program for some 6 Pluses made between September 2014 and January 2015. In affected phones, "the iSight camera has a component that may fail causing your photos to look blurry."
Any iPhone 6 Plus owner can enter his phone's serial number on Apple's recall mini-site to determine whether that particular phone is affected. Should a phone fall into the affected serial number range, Apple will replace the camera module for free. The only other condition is that the phone has to be "in working order" to be eligible. Sounds as easy as a snapshot.