Dutch telecomprovider says on Twitter that Nokia N8 will be delayed until November due to software problems. The delay is said to be worldwide.
The Symbian^3-handset was demonstrated to the public at the Nokia World event in London last week, without saying a word about a possible delay. The Nokia N8 before was scheduled to be available in the first weeks of October.

(translated) Bad news: Nokia N8 delayed until November due to (worldwide) software errors. More news to come, also for people who made a reservation.
Beta-tester
The Indian Symbian beta-tester Gaurav Hasabnis brought the news earlier this day. His tweet was mentioned in an article on Slashgear, in which Nokia denies the delay. We asked Nokia for a comment ourselves, but they've given no answer yet.

Later than Windows Phone 7
If the Nokia N8 comes in November, the handset possibly comes later than the first phones with Windows Phone 7. Windows Phone 7 was finished some time ago. Manufacturers are now finishing their first phone. The quickest of them may come to the American market with a Windows Phone 7 Phone in November.