Wharton announced the following on their admissions blog:

"With November right in front of us, here’s what will happen next. Invitations for Round 1 applicants to interview will be sent November 2, and if you are invited, you will participate in a Team Based Discussion (TBD) and a one-on-one interview — either on campus in Philadelphia, or in one of several major cities around the world, including Beijing, Delhi, Dubai, London, San Francisco, Sao Paulo, Seoul, Singapore and Tokyo.

We encourage you to interview in a location most convenient to you. You can learn more about the TBD — which mimics the collaborative nature of the Wharton community — from the people who experienced it firsthand, our current students."