At the moment it looks like the N9s will be send out to all first prize winners, regardless if their app is in the Nokia Store or not. They should arrive here at Nokia Germany this week (coming directly from the factory in Finland) and will be send next week. I hope that Nokia does not remember the "only-if-your-app-is-in-our-store" agreement, and won't make more problems.
Either way most of you don't have to fear, as nearly all apps are availabe in the store.
b0unc3 does have all the addresses for the second prize winners for the N900s, and I think he sent them already to the Qt Project (the sponsor of the N900s).
I think they'll be send next week as well.

As soon as I know the devices are being sent, I'll transfer the money.
But thanks for remembering, I have to send an email to all 3rd and 4th prize winners, asking for their PayPal address.