Thanks!
Yes, I got the mail this morning. I just copied a part of the mail and pasted it in my post. I also wonder why it says "On may 7...."
The following are some significant dates related to my application:
RD: 04/29/04 (I-140 EB1a & NIW; I-485)
AD-140: 05/02/05 (EB1a & NIW)
AD-485: 05/05/05 (my I-485 and my family's were approved at the same time)