My original thoughts were, "no replaceable battery AND no microSD option...no deal." But, with the revelation that there will be a microSD option and the sealed battery should be enough to get a moderately heavy user through the day, I'll probably do the upgrade. However, I'm still not buying into the glass back. It'll add weight to any already large phone. The current back of the Note 4 is thin plastic, yet it's durable and doesn't add weight. That would have been fine with me for the Note 5. That said, looks like I'll do the upgrade...especially since my Gear S will only work with Samsung devices. And I do love my Gear S.