Clubs will play each other once in the group stage for a total of four games - two at home and two away. Fixtures will be published shortly.
The three group winners and best runner-up will progress to the semi-finals.
Group A
Celtic
Dunfermline Athletic
Greenock Morton
Motherwell
Dundee
Group B
Ross County
Queen of the South
Aberdeen
Kilmarnock
St Johnstone
Group C
St Mirren
Hibernian
Heart of Midlothian (holders)
Dundee United
Hamilton Academical
Dates (subject to change)
MD1 August 26
MD2 September 23
MD3 October 21
MD4 December 2
MD5 January 27
Semi-finals: February 24
Final: March 16
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