I have a flight to PEK/PVG mid February, I'm hoping AC will extend waiver to cover those dates, as what I hear from my relatives, the outbreaks in both cities are much worse than reported.
These dates are within the window for rebooking, and PEK is now included.
This said, I would take rumors from friends or relatives in Beijing with a grain of salt. Rumors tend to go way beyond reality. Still, if it were me, I would probably go ahead and cancel a February trip, just to be on the safe side.