Apple Inc.’s biggest event of the year takes place Monday, when the company introduces its latest iPhones and paves the way for a new artificial intelligence platform.

The event kicks off at 10 a.m. local time on September 9 at Apple’s headquarters in Cupertino, California. Apple doesn’t normally hold this event on a Monday, but the earlier timing gives the company an opportunity to prepare for an eventful Tuesday, with a U.S. presidential debate and an expected decision by the European Commission on whether Apple will owe $14 billion in taxes under a long-running deal with Ireland.