During the first minister's statement on the All Wales Convention report Rhodri Morgan AM faced a number of questions from the Conservatives, Plaid Cymru and the Liberal Democrats regarding the timing of the referendum, on 24 November 2009.
Plaid Cymru AMs demanded the first minister confirmed that the option of an autumn referendum in 2010 would not be ruled out.
The leader of the Liberal Democrats Kirsty Williams AM stated that there was no reason why the referendum campaign couldn't begin immediately after the general election in 2010.
Mr Morgan said that the final decision would be made by his successor, but stated that there were several options of when to hold a referendum and that no dates would be ruled out for the time being.
The report recommended that a referendum should be held on giving the Welsh Assembly full law-making powers in devolved areas.
However it stressed that a 'yes' vote in favour of boosting powers was obtainable but not guaranteed.
The report said that there was much confusion amongst the public as to how the current system of transferring powers from Westminster to Cardiff Bay through
Legislative Competence Orders
As part of the Labour-Plaid Cymru coalition deal, ministers are committed to holding a referendum, if it is winnable, by May 2011.
But in order to hold a referendum two thirds of Assembly members must vote in favour of one.
It will then need the approval of the Secretary of State for Wales and a majority in both Houses of Parliament.