This follows a meeting between Prime Minister Manmohan Singh and Congress President Sonia Gandhi this morning in which finishing touches were understood to have been given to the proposed changes.
This was the fourth meeting of the two leaders in recent days. The reshuffle is expected to place at 5 PM, the sources said. About 10 to 12 ministers including new entrants from Trinamool Congress and Congress are likely to be involved in the reshuffle.
Sources said that Trinamool Congress Chief Whip in the Lok Sabha Sudip Bandhyopadhyay may get a berth and could be inducted as Minister of State.