I will upgrading from a 6+ to an 8+, but probably for a different reason than most. My 6+ is still working fine -- I would continue to use it until it died -- but I recently switched from Verizon to T-Mobile, and discovered that the 6+ is only partially compatible with T-Mobile, as it doesn't receive all the bands on which they transmit. Hence, the LTE coverage is pretty spotty. In many locations it works great, but go a few miles and suddenly all I get is plain 4G, or Edge. As I understand it, this was addressed starting with the 6s. I could just upgrade to that, but if I'm getting something new, might as well get the 8+.