Major regional groups have called upon the new military leadership to ensure that the constitution is restored by July 2024.
The Doha meeting would be a prelude to agreeing on a new constitution and then holding elections in the African nation that was thrown into turmoil last April.
A dispute erupted last July when Moussa Faki Mahamat, chair of the African Union Commission, accepted Israel's accreditation to the bloc.
Ethiopian military has "completely captured" an airport in northwest town of Humera, close to border with Sudan and Eritrea, local media report.
Egypt and Sudan view the dam as a threat to vital water supplies, while Ethiopia considers it essential for its electrification and development.
Tens of thousands have died and nearly four million South Sudanese have been driven from their homes as warring parties continue to tear apart the fledgeling country which gained independence in 2011.
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