Hi R C-R
My apologies for this misinformation.
Due to overwhelming interest in the Affinity Photo Workbook, stock ran out earlier this week and was scheduled for replenishment later this week; there was a small delay with this and so we had to put this date back to Monday.
As opposed to change the message provided, and since there was only a very slight delay, we decided not to update the message received by customers via email.
My apologies if you have been caught up in this delay; it certainly wasn't our intention to disappoint. You should have your Workbook in no time at all.
Let me know if there is anything else I can help you with.
Best Regards,
Steven