Good point. However, that would imply that as suspected Bitstamp did not bother to send it out on Wednesday as they promised, despite knowing about the upcoming holiday. If they had clicked on "submit" on Wednesday it would definitely have gone out that same day.

If this is actually what happened, this would result in a withdrawal time of at least 8 days - echoes of the various Mt. Gox excuses back in May just before they stopped allowing withdrawals altogether.