I've been seeing it here locally just in the last week or two.
Normally, when I look at tracking, if I see that something gets to a sort facility in St. Louis, ~30 miles away from, I will almost always have it the next day. If it gets to that facility early enough(say 1:00AM), delivery to me that same day isn't unheard of.
This is typical of what I'm seeing now, and I have several packages out there currently that have been doing this same bouncing around the sorting center routine since late last week. They are trickling in one by one, but nothing like normal.
Considering that I took this screen shot just a couple of minutes ago, and it's now 6:30 AM our local carriers are most likely having their trucks loaded for the days deliveries(tracking history tells me that at least our carrier normally leaves the post office around 7:15-7:30 every morning).. Even if the one above somehow rolls into the local post office in the next little bit, I doubt it's going out today.