From the way the Common App and Middlebury website both look, the application supplement is fairly straightforward - there is no essay this year. HOWEVER, I talked to someone who applied last year and then I searched around a bit. In years past, Middlebury has required a supplemental essay and another graded analytical essay submitted by regular mail (at least that's the impression I've gotten by briefly searching).
As far as I can tell, Middlebury does not require those essays this year. Is that the case or am I not looking well enough?