I guess what is happening is that they just looked at the due date on your file which is likely Dec 2016. IMO it means nothing as I had the same due date and already landed. Don't stress yourself :)
Ok then. It means that you already missed the 30 days deadline for submitting your passport. Make sure that you communicate the issue before sending out your passport.
Thanks man.
It's very true. I'm pretty sure that there are still few people that already got a PPR but have not had a chance to update us. So I would say that the rate could be even higher.