they don't update it post-interview. i think they'll call you or send you a letter. they will update it if you send them an "intent to register" letter.
hey constructor, i hear if you're rejected you can't log in. if you're accepted, they send you a snail mail letter. maybe your interviewer will be nice and let you know ahead of time. i got the call i think 2 wks before the snail mail. i have had friends who heard of holds via status page.