I'm in CS. I think people are mostly believing people now, since there have been a few more people who heard back, but in case people care, here is the text of the email that had the award package attached.
Anyways, if you haven't heard, good luck. It certainly seems like a very sporadic notification process, so I would try not to read too much into anything.
Congratulations again on receiving the 2011 NDSEG Fellowship! Attached you will find the Awardee Package.
The Terms and Conditions form contains descriptions of the program’s details, and requires your name, signature, social security number, and the date. Signing the Terms and Conditions indicates your formal acceptance of the NDSEG Fellowship. The Fellow Contact Information form provides ASEE with your contact information and should be submitted along with your signed Terms and Conditions. If you do not yet know your graduate institution, please send in the form with that field blank, and then you may email us when you decide. The Authorization for Direct Deposit form provides ASEE with the information on your banking institution allowing ASEE to pay your monthly stipend electronically, thereby guaranteeing that you receive your stipend in a timely manner. You may delay sending this form until you know your banking information for the upcoming year. The Citizenship Requirements instructions are to be completed as soon as possible, and will provide ASEE with the necessary proof of citizenship documentation. Also included in the award package are memos on the taxability of your fellowship and on the patent rights of fellows. The offer of the NDSEG Fellowship is conditional based upon the availability of funds and the fellow's satisfactory progress towards an advanced degree in science or engineering.
You have not finished accepting the NDSEG Fellowship offer until you complete, sign and date the Terms and Conditions and return it to ASEE as soon as possible. The other documents may follow at a later date. Please send the required documents to ASEE by regular mail (not email or fax) to formally accept the appointment and we will confirm receipt of the materials via email.
If you have any questions, don't hesitate to contact ASEE at 202.649.3831 or by email at NDSEG@asee.org. We will be happy to assist you.
Congratulations once again!
The NDSEG Program Team at ASEE
1818 N Street NW, Suite 600
Washington, DC 20036
Phone: (202) 649-3831
Fax: (202) 265-8504