I plan on purchasing both books and have signed up for notifications using the same three e-mail addresses for each item.
Did not receive a notification email to any of the three email accounts stating that the Reg edition was in stock and ready for purchase. (I was notified by reading this thread that book was in stock)
Not trying to create frustration for anyone, but your blanket statement of "The notification will come the same way as the previous items. No one who signed up for that has missed out on anything. Stay tuned" is not correct and that things do in fact fall through the cracks sometimes.
Let's hope that I'm the exception and others can simply lie back an relax and wait for notification.