Intern here, just popping in to check out what's being said this year, sounds much like this time last year.
Don't worry, still early in the game, and many of these programs will send out waves of invites, you may hear that this guy got an interview at X program and you didn't get anything, but you hear from them the next week.
Also, it will be very strange who gets interviews where. The person that you thought may not match from your program might get an interview somewhere that you with stud numbers and letters did not.
Another relax factor, I continued to get interviews until the second week of December, so if you don't have may yet don't sweat it too much.
