"unitethenations" above claims to be in the same boat as me, though he/she hasn't given details about configuration.
Having called three reps, there's nothing else I can do. The delivery estimate on their page is and has always been Oct 27-Nov 5, so unless I don't have it by Nov 5, they'll just keep telling me that I have nothing to complain about, in particular not "rumors" of other people getting theirs earlier. The problem is, they simply don't care. Even if I gave them 10 order numbers that were placed after mine but have arrived, I bet they still wouldn't care. I think the company is just doing too well at this point, so they can afford not caring.
I was in the same boat, until they decided to prep my order. My config is listed above as 2.8/320@7.2k rpm. Previously I was getting annoyed because I saw that if I ordered after my initial order date (21st) I would have gotten my order perhaps this week, like some people on the forum, but like you couldn't complain because my final delivery date was listed as Nov. 7th.
What I can suggest, although it didn't work too well for me, is:
1. To contact customer service and ask them to check if they have 2.8's in a store near you and then install the larger hdd yourself (I did this before and they told me 1 store did). If you phone the store directly they'll tell you that they don't have any, but that's usually because the person answering can't manage to understand that you're asking about the physical stock and not online ordering.
2. Contact cust. service at sjobs@apple.com
This is probably your best bet.
3. Write in to consumerist.com