Nope, not my flight. But I arrived in Philadelphia before the previous flight to Greensboro had left. They gave me a seat on that one, but luckily, left me booked on my original flight. They just cancelled the earlier flight, and are now trying to rebook people on the 9:40 flight. They aren't all going to fit.
Apparently, this half of PHL was shut down for an hour, and everything is a mess.