Yep. My eligibility date was 11/18 last night, and switched this morning.
I half-suspected this would happen; when I talked to one of the managers at my local AT&T store a couple of weeks ago, she mentioned that she "wasn't sure about online orders" but she could go ahead and do the upgrade in-store at the subsidy price on November 1st. As some others reported elsewhere, it just had to be within the same calendar month as your reported upgrade date. Thankfully it just switched in the system so I don't have to order through the AT&T store. They're still quoting "4 weeks" as of today if I ordered through them.
Now I just have to decide if I want to go ahead and order online through Apple or take my chances at reserving at the local Apple Store. Probably going to order online since I'm assuming a black 16 GB AT&T will be hard to come by.