tim3320070
Headphoneus Supremus
No, your Note 3 is not, in fact, limited to 64gb
Manufacturers state the highest storage available at the time of a phones release, but the 128gb cards will work. I've been amongst the first to get each new class of card from 4gb all the way up to 64gb (my YouTube video showing the S2 with a 64gb card was the first in the world to show this, for example), and they've all worked regardless of what the manufacturer says the maximum capacity is.
Now that's helpful info, thanks!