(This isn't a prediction, exactly. Or if it is, it's extremely speculative and with a fairly low weight of confidence.)

The end of an arc will be posted here in a little while. The last couple of arc-concluding chapters have been from points of view we don't normally get. The end of TSPE was with Trelawney, and before the switch, Self-Actualization ended with Snape. Both were rather portentous moments: Trelawney had a vision of something horrible coming, and Snape made a decision that might ally him permanently with the Dark side.

For obvious reasons, we've not really had a section from Quirrell's point of view. The parentheticals a couple of chapters ago, about Amelia Bones being quite intelligent but surrounded by morons, might have been from Quirrell's head, and much of the rest of the section was written with implied omniscience of Quirrellmort's past, but it was far from a complete inner monologue.

As we approach the end of Harry's first year in Hogwarts, things are probably going to get much worse fairly quickly. And if the revelation of Quirrell's true nature is forthcoming, I wouldn't be surprised to see — or at least, I would love to see — Quirrell's last thoughts before his endgame plans are put into motion.