They always had 99% of hotel responses within 15 minutes anyway, and probably 70% within 3 minutes. It was an unpublished feature.
You wouldn't have happened to have read USA Today today (2/6) by any chance?
Now, I wish that they would go back to a printable receipt that can contain the price, hotel, and date information as well as the priceline logo in one page. I've spent four emails over the last day and a half to PL customer service on this issue to no avail, as it now sprawls over two pages and makes it very difficult to submit for reimbursement.