It would be nice if USNA updated the portal but they don't. You won't see any changes. My son emailed his admissions counselor about a month after signing to make sure they received his acceptance.
DD mailed her acceptance paperwork to USNA on March 29 and it was delivered on April 1 (used USPS Priority Mail with delivery confirmation). Her candidate portal changed this morning, and now has the following two new sections at the bottom:
PERMIT TO REPORT PACKET
Congratulations on accepting your appointment to the United States Naval Academy for the class of 2017! You should be very proud of this accomplishment.
Your Permit To Report package has been sent to you in the mail, and you should receive it shortly if you have not already. Included in the Permit to Report package are multiple forms that must be completed prior to May 31, 2013 (or as quickly as possible if received after due date). As a supplement to the mailed package, the entire Permit to Report package is also available on the Permit To Report website in the event replacement forms are needed.
SPONSOR PROGRAM
The Sponsor Program provides members of the U.S. Naval Academy's entering class an opportunity to develop and benefit from informal exchanges with civilian and military members in Annapolis and its adjacent communities. The Plebe Sponsor Questionnaire will be used to match each incoming plebe with a sponsor family of similar interests or with a requested named sponsor.
The Plebe Sponsor Questionnaire must be completed regardless of whether you wish to participate in the program or not. A date displayed indicates the date it was submitted to the Sponsor Program office. If you have questions concerning your Plebe Sponsor Questionnaire, please contact the Sponsor Program Office via email or call xxx-xxx-xxxx
Plebe Sponsor Questionnaire: Not Received (Submit Online)