We doubt that's going to be the real title, but we never could avoid sequel humor. Apparently, director Motomu Toriyama enjoyed making Final Fantasy XII: Revenant Wings so much that he'd like to develop a sequel.
This is by no means a confirmation or an announcement or any of the other things it'll be labeled on message boards. It's just a casual statement. But a Revenant Wings sequel seems likely, since the sales have been pretty good, and, most importantly, we're talking about Square Enix, who has kind of a thing for sequels.