Edit: OK, so, I'm not so sure about the stock this week. I called NokiaUSA yesterday, and they said, well, look in the evening. No sign in the evening. I also asked if the summer280 code would be reinstated to be used when the N900 was back in--they said it would be. Finally, I called again this morning (Thurs Aug 19th) and they said they'd call me (right! not entirely sure given the performance of their email notification) and that the N900 would be back in stock sometime, but they didn't know when -- probably 1-2 weeks. Sigh.
-Jon