The books now released by GoK also include some recent books which contains collections like complete works of Dr Ambedkar, essays on Ambedkar, research works on Kanaka dasa, etc.Copyright on Ambedkar work is yet another interesting grey area<quote>
Since Ambedkar had died intestate, the Maharashtra government was ordered by the Bombay High Court to take charge of his voluminous writings which were rotting away for want of a custodian. It set up the clumsily titled Babasaheb Ambedkar Source Material Publication Committee (BASMP) which since 1979 has been publishing omnibus volumes titled Dr Babasaheb Ambedkar: Writings and Speeches. To date, 23 such volumes have been published in English and these claim the copyright vests with the secretary, Education Department of Maharashtra. But that it turns out is not strictly true.BASMP has been selectively giving permission to those who have sought its consent to republish Ambedkar’s works—some like Jadhav have not bothered to do so—to clear the legal issues that would allow them to copyright their value-added books. It was not till Navayana filed a suit in the Delhi High Court—its letters to BASMP went unanswered for months as did the their RTI (right to information) applications— that the truth finally emerged. In February, BASMP admitted that it did not own the copyright and only had the lease for it. The copyright, it said, is owned by members of the Ambedkar family which had given the rights to the state of Maharashtra on payment of royalty.
Following this submission, the court said Navayana was free to publish AoC at its own risk. </quote>In short whoever license Ambedkar works under CC has to take same risk . I doubt Wikimedia community have to wait till 70 years after authors death till using these works . Releasing them under CC does not carry any legal meaning .