Here are the information I got so far.
Essay for Kellogg isn't going to change much this year. (this is from an unverifiable source)
Application has two parts (I did not know that)
1. Demographic data form, universities and professional schools attended ,your self-reporting score, recommender name, etc. After this part (due Oct 3 approx)you can request an interview
2. This part is where you have to submit your essays, transcript, resume etc. (due Oct 15 approx)
This is quite different from other schools.