Cardiff City's relegation from the Premier League means the South Wales derby is back on the agenda for the first time since the 2013/14 season.
It will be the fixture that Swansea City and Bluebirds supporters will first look for when the dates are announced.
Graham Potter has done a superb job in his maiden campaign at the helm at the Liberty Stadium, while there will be some uncertainty over who will be in the Cardiff dugout next season, with boss Neil Warnock's future remaining undecided.
Whoever is in charge, the derby will be the most eagerly anticipated date in the respective fans' diary.
The Championship fixtures for the 2019-20 season will be released at 9am on Thursday, June 20 , the EFL has confirmed.
Saturday, August 3, is kick off day for the Championship, League One and League Two next season although there is likely to be a live TV game on Friday, August 2.
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Key dates:
Thursday, June 20, 2019: Fixtures released at 9am
Saturday, August 3, 2019: EFL season kicks off (with a likely live game on Friday, August 2)
W/C August 12, 2019: Carabao Cup Round One
Sunday, March 1, 2020: Carabao Cup Final
Sunday, April 5, 2020: EFL Trophy Final
Saturday, May 16, 2020: League Two Play-Off Final
Sunday, May 24, 2020: League One Play-Off Final
Monday, May 25, 2020: Championship Play-Off Final
Neil Warnock's live TV tribute to Cardiff City fans moments after relegation was confirmed
