Early November
iOS 5.0 will be pushed back to early November, after the 1st Sunday to be exact.
Apple found a bug in the beta that prevents alarm and clock to work with daylight saving time.
As 7 months is a bit short to solve the problem (Apple escalation team has already been working on the issue for 2 years now without great result (except changing the direction of the clock change)), they decide for the root cause of the issue to disappear (at last until early April, well after the holidays season $$$).