Received my replacement V10 from Verizon this afternoon. The box says "like new - certified replacement". It looks, feels, and acts like a brand new phone. Other than my slightly worn out battery cover, it looks brand new. It Has a build date of 8-25-16, so its definitely newer than my October 2015 unit. Screen looks much better with no signs of any image retention as it sits now. Side by side the screen on the new phone looks more crisp and clear. We'll see if it comes back anytime soon. It could be since its a fresh unit in terms of software, but so far it seems more responsive and quicker. The stock music app actually has no lag, which on my old phone was pretty much unuseable. The charge port and headphone jack both feel much tighter as well.
Edit: in a dark room i dont see any light bleed in the top left corner of the secondary display on this replacement device either.