Egypt's newly appointed
Prime Minister Hazem al-Beblawi is beginning work on forming a new
cabinet, a week after the army ousted President Mohammed Morsi.
Mr Beblawi is expected to offer posts to Mr Morsi's Islamist
Muslim Brotherhood, although it has refused to co-operate with what it
says is a coup.The liberal National Salvation Front said it was not consulted on the decree and wants changes to be made.
The US said it was "cautiously encouraged" by the move towards reform.
The timetable for new elections was announced by Interim President Adly Mansour on Monday evening, hours after at least 51 people - mostly Muslim Brotherhood members - were killed outside the military barracks in Cairo where Mr Morsi's supporters believe he is in detention.
The decree laid out plans to set up a panel to amend the suspended Islamist-drafted constitution within 15 days.
The changes would then be put to a referendum -
to be organised within four months - which would pave the way for
parliamentary elections, possibly in early 2014.
Once the new parliament convenes, elections would be called to appoint a new president.Late on Tuesday Ahmed el-Musalamani, spokesman for the interim president, said talks on a new cabinet would start on Wednesday.
He said posts would be offered to the Brotherhood's political wing the Freedom and Justice Party (FJP) - which won Egypt's first free elections in 2012 - and to the ultraconservative Salafist Nour party.
However the proposals were widely rejected by both Islamist and liberal parties.
Mohamed Kamal, a senior official in FJP, told the BBC: "We will never take part in any cabinet as long as Morsi is not back as a president."
The party's deputy chairman, Essam al-Erian, earlier called the timetable announced by Mr Mansour "a constitutional decree by a man appointed by putschists".
Nour had initially backed the ousting of Mr Morsi but pulled out of the election process after the killings at the Presidential Guard barracks. It opposed the appointment of two prime ministers before approving Mr Beblawi, saying they were not neutral.
One of those it rejected was leading opposition figure Mohamed ElBaradei, who has since been appointed vice-president.
The NSF, led by Mr ElBaradei until his
appointment, draws together more than 35 liberal opposition groups. It
had rejected the election timetable outright on Tuesday night, but on
Wednesday it issued a more mildly worded statement saying it had not
been consulted on the decree, and therefore it was "issued including
articles we disagree with".
It said it would put its proposed amendments to Mr Mansour.An official in one of the parties in the NSF told the AFP news agency the plan foresees new "legislative, executive and judicial powers" for the interim president, and that by signing up to it "you would look like a hypocrite".
"It makes it look as if you are not against dictatorship, just against a dictatorship that is not from your group," said the official, who asked to remain anonymous.
Even the Tamarod movement, which led the mass protests that ousted Mr Morsi, said it had not been consulted on the election plan and was asking to see the interim leader to discuss the situation.