Both my wife and I updated our Note3's via WiFi yesterday evening. Took a while and the phones got pretty hot but all went through fine. I have noticed a bunch of annoyances with this new OS:
1. Colors: I drive with my phone docked. Having these pastel, bright color scheme all over the place may be some sort of new, hip look, but I find it annoying. I will be looking around for apps, and themes that will bring all this to a dark, black background, basic theme within messaging, music, etc that won't kill my night vision.
2. Music Player: The default media player seems to act funny now. Besides the annoying colors mentioned above, in landscape mode, it's almost useless. It doesn't know how to present the same sort of information as it does in portrait mode. I can no longer see the track list in landscape, and instead it shows me a bunch of "suggested" songs I should chose from if I so desire. Huh??
3. Weather App: For some reason, my weather and clock widget stopped updating. Today it finally offered to obtain information from a different feed or something and now it's working. Strange but ok. There are plenty of these but I really liked this one the best.
So, in summary, it looks like I'll be searching for a new txt message aggregator and media player --apps that can render useful information in a landscape mode just as well as portrait, and apps that have a dark color scheme for driving.