At first, VoLTE will be used to deliver "Rich Communications Services" (which look like something similar to what Voice over IP/Video over IP outfits offer today) rather than completely replacing narrowband voice. It will be awhile before Verizon is willing to commit to that, due in part to LTE outages in late 2011.
On the flip side is MetroPC, which has pushed VoLTE as hard as it could.
Then there's Sprint, which will stick to voice over 1x for the foreseeable future, but routes Direct Connect over IP. Sprint's latest DC incarnation seems quite similar to one facet of RCS over LTE.
IMHO yes. Ordered the Note 8 (pre-owned) early last week for my daughter. Arrived in perfect condition. I was worried about the battery life but honestly it seems fine. Charger shipped appears to be a generic, but still has fast charge. No extra nibs for the pen, just the one. I'm not a Samsung person so not sure how long the pen nibs last or how many ship with a new Note. I'm not a Samsung fan but kinda liking the phone. She is very happy with it.