I don't think I got this email either? I interviewed in mid-December on-campus. There are similar messages posted to the PAS...but I don't think with exactly the same wording...
Here is the whole thing copy/pasted from my inbox. I interviewed way late (February) so maybe it is a recent addition to the process? I received this email the day after I interviewed. Here it is:
"John Smith,
Greetings from the Office of Admissions:
We would like to take this opportunity to thank you for interviewing at the Duke University School of Medicine. Please consider completing our 60 second survey by clicking on following link according on your interview type. This feedback will be enormously helpful to us as we plan subsequent seasons. The links below will take you to one of three surveys (if you have any problems opening the links, place your cursor over the link, right click your mouse, and either open the link in a new tab or a new window).
If you interviewed on campus, click this link and complete this survey:
On Campus Interview Survey
If you interviewed with an Duke alum off campus, click this link and complete this survey:
Virtual Interview Survey
We sincerely hope that your visit to DukeMed provided you with an opportunity to witness first-hand the extraordinary community of scholars and clinicians that we call our "Duke Family."
Our timetable for the remainder of our admission season is as follows: interviews will conclude in late February with a target date for mailing decision letters at the end of February through the first week of March 2010. Duke does not roll.
Always feel free to write or call the Office of Admissions if you have questions.
Once again, on behalf of our entire community, we thank you for your interest in the Duke University School of Medicine and wish you luck!
Sincerely,
THE OFFICE OF ADMISSIO! NS"
That is the whole thing, front to back. Ringing a bell now for you guys? Weird if it isn't a standardized e-mail.