Xbox have announced their times for their Tokyo Game Show event, 7pm AEST. Like in years past the event will focus more on Japan, but given the very global nature of the company, there are likely to be info released for all regions.
As always here are the all local times, but for those regions not covered, select the calendar type to the left for a locally converted time:
AEST - 7pm Thursday September 21
ACST - 6:30pm Thursday September 21
AWST - 5pm Thursday September 21
NZST - 9pm Thursday September 21