There are several articles online detailing a letter Wharton has/will send to applicants containing more specific information on their new interview format for this year.
Among the details are two interview questions they may be asking to applicants:
What one talent or strength should a leader rely on most in daily life?
If you could teach one thing about innovation to a group of new employees, what would it be?
Read more here at the Poets&Quants website.