What bangbang tech say I think is possibly true, but misleading.
We were told that the n900 would be available from select markets from October...
However bangbang tech is a uk site (given the .co.uk amazon address), and the UK I seem to remember isn't one of those select markets.....
And it's the Nokia.co.uk site that has the tentative delivery date of November.
So I think they are just confused, like many others when the actual release date is, as we actually haven't been given one as such.

Of course maybe that's all wrong and I will get my n900 in October which would be well nice :-D