The League Cup will kick off the new season one week ahead of the Championship start.
Several changes have been implemented for the Carabao Cup competition next season.
The first four rounds will be held during the month of September, with the two-legged semi-finals being replaced by a single tie.
The first round of the competition - which will officially mark the start of the EFL season - is scheduled to take place on September 5, but due to the international window may be played on alternative dates.
The following three rounds will then be played on consecutive midweeks starting September 15/16.
Premier League sides will enter the competition in the second or third round if they have qualified for European competition.
The first-round draw, which will be divided into a northern and southern section as in the previous two season, will take place on Sky Sports on Tuesday, August 18.