It was originally thought that Mark Bridger's appeal bid would be heard by leading judges at the Court of Appeal in London on January 24.
Bridger, a father of six, snatched April near her home in Machynlleth, Mid Wales, on 1st October 2012. Her body has never been found.
Sentencing Bridger in May, Mr Justice Griffith Williams said: "There is no doubt in my mind that you are a paedophile, who has for some time harboured sexual and morbid fantasies about young girls."
More top news
Walmley in the West Midlands would become the new centre of Great Britain if Scotland vote to go independent, Ordnance Survey has said.
The man is thought to have tied himself to the bottom of the vehicle as it travelled from Calais to Kent.
A woman in Thailand killed herself by jumping into a pond of crocodiles at a popular tourist attraction, Thai police said.