No clue, but the email says the interviews will be held at the Bill and Melinda Gates Foundation in Seattle... Not sure if that's a change for everyone or just for West Coast people.
Thanks! ? I applied to Geography, which is also my undergrad field.
As someone who has been lurking this thread for a while, I felt a little bit compelled to reply. I got an invitation this morning to interview in Seattle, for the Social Sciences panel, in January. I received an acceptance email from Cambridge in November. Hope you all have also been as lucky!