No, you hit it right on the head, actually. I've so far received 4 update notifications, but there are no new chapters showing. Sooo if there are new chapters...where are they?
Author's response
New theory -- it is actually sending out alerts every time I fix a typo in an earlier chapter. That's about the same number of chapters I have fixed things in since your last note.
Do they have links to the specific chapter, or just to the newest one?