Talk:Final Fantasy III
"Pixel Remastered" isn't part of the title on any of the sites selling the game. I know Square Enix used that term in marketing, but I haven't seen any reason to believe that it's part of the official title.
P.S. On the official site, they call it the "2D pixel remaster series". None of the games have the phrase in their titles. If anything, we should consider a subseries for the pixel remaster games.