The 2014 Wharton MBA deadlines have been published:
Round 1 - October 1, 2013
Round 2 - January 7, 2014
Round 3 - March 27, 2014
Other top schools which have already published their 2014 deadlines include HBS, Stanford, INSEAD, Michigan, Berkeley and Columbia. You can find a list of 2014 deadlines published so far here: https://www.aringo.com/Current_Deadlines.asp