Why? It seems like invites went out well into Feb. The amount of time between invitation and actual interview was shorter, but they were still invited. Plus, seeing as how there seemed to be a lot of people interviewing between this time and end of Feb last year (and SDN is a limited population pool. There's loads of people out there not posting they are interviewing) it is not so bleak.
Side note: look at it this way, one second you won't have an interview/acceptance and the next you will. There is no warning or "signs" it's coming. So even if this is not the moment you get an email or call respectively, well there's always the next. 2-3 months is a REALLY long time. Write off this next week and know we're only at half-time right now. If you've had other interviews/acceptances, at least your on the board. If you haven't well there is still plenty of time for all that to happen.
OK there is my overly optimistic, self reaffirming, rant for the day.
Also, if anyone that has gotten in or is currently in CU, I would love to PM you my stats just to get view on them to see if all this sunny Annie-like-Sun will come out tomorrow-jazz is realistic or not. 😀