5.1 will still be Lollipop.
actually you guys should already have 5.1
if im remembering right the factory reset protection deal came in with 5.1.
I have software version G900PVPU3BOF6, I think this is a just a fix for the reactivation lock, maybe a couple of other tweaks. The phone Android version is still 5.0. I suppose I can buy the biggest SD card I can find and add an Anker extension battery and be o.k.. Even then, the white background is killing me, I can't stand it. It is a constant reminder that I dislike this OS. I am hoping 5.1 at least takes a few steps in the right direction.
I can safely say that no it doesn't lol. That background is there to stay for a while. More than likely until the next big OS update that pops out.