Yeap, it's not a typo. I just got an 1.0.1 firmware update instead of the 1.0.4 (see the screenshot). I have kept my Whispernet off for the past week or so in order NOT to update my firmware. But it seemed that the update still managed to sneak in during the limited time while I was downloading new books. Maybe 1.0.4 isn't really ready for the prime time so they pushed 1.0.1 instead?
On a separate note, now that the firmware update's out, I was wondering if anyone found ways to make customary firmwares. Of all the possible enhancements, I really really want unicode support so that I can read non-roman mobi books.