Today, my candidate portal was updated. It had two additional boxes: one for accepting the appointment offer and another for a few data entries.
The first box has a link that says to click it to either accept or decline your nomination. Instead of sending the card in, you can electronically accept the appointment immediately and digitally sign from your candidate portal (which is what I did).
The other new box that appears is a "Gray Cards" section. It has four links. One for personal information (religious preference, blood type, and something else), one for uniform sizes (size of your waist, shoes size, and shoe width), one for any points of contact that you would like to have your grades mailed to, and a travel section for securing your tickets for R-Day.
If you have any questions, I'm here to help. I'm looking forward to seeing you guys at West Point this June!