The episode will be available to watch on ABC iview throughout the day before its broadcast on ABC at 7.40pm Sunday 24 August.
The time for the early-morning simulcast is yet to be confirmed.
ABC has also secured an exclusive interview with Capaldi, to be conducted by Julia Zemiro.
When Julia Met the Doctor will air on Wednesday August 20 at 8pm on ABC, four days before the season return.
This will be filmed in Sydney next week during the promotional World Tour discussing Doctor Who plus Capaldi’s former roles from Local Hero to The Thick of It.