Interviewed 3/27/13. Just got this (via the portal):
Decision: Hold 04/30/2013
Since your interview, you have been discussed by the Admissions Committee and were placed in the hold pool.
With roughly 500 interviews conducted over the course of six months (October through March) and a limited number of placements to offer, the Admissions Committee must put many applicants in the hold pool until they have had a chance to discuss each of their interviewed candidates. The Admissions Committee will be discussing applicants through the beginning of May, which means that you will be notified of a final decision regarding your application no later than May 15, 2013. Applicants put on hold will remain on hold until May 15, when final decisions are made. At that point you will hear a decision of Accept, Alternate, or Refuse. Please note that further updates will not reopen your file or change the committee's decision.
I'm a little surprised they bothered putting me on hold this close to May 15th. \