Samsung Galaxy Note 3 owners from US Cellular can hit that update button now (or wait for the prompt to update) as they are joining the rest of the world for that Lollipop update. The OTA can be had via Samsung Skies or if you go to the update menu and get the Android update via WiFi.
This update brings about more animations, a priority mode, multi-user and a new lock screen, among others. It is based on 5.0, but we expect most of the bugs from the first iteration of the OTA were fixed. It could also be that this is the last update Note 3 will ever see, at least on US Cellular.
Source: US Cellular