On Sunday (05Mar17), the publicly-edited festival listings website Clashfinder published a comprehensive list of acts performing at the festival from 23 to 25 June (17).
Their list included many performers who are yet to be announced, notably Ed, who would reportedly take the prestigious Sunday night (25Jun17) headline slot on Glastonbury's Pyramid stage.
However Emily, who runs the festival with its founder, her father Michael, took to Twitter to dismiss the line-up as false.
"Don't believe everything you read, our line up has not been leaked. The actual line up will be with you soon! #fakenews," she wrote.
Two of the Pyramid stage headliners have already been announced, with British rockers Radiohead set to play on the Friday (23Jun17) and Foo Fighters taking to the stage on the Saturday (24Jun17).
Rumours have strongly linked Ed, whose third album ÷ (divide) has sold more than 400,000 copies in the U.K. since its release on Friday (03Mar17), with the final headlining slot, and he has made no secret of his desire to headline there.
In 2015, the Thinking Out Loud singer told the Press Association, "The next festival I do will be headlining Glastonbury, but it just won't be next year... I want to be able to have at least three or four albums before I do it."
Other acts 'leaked' as performing on Clashfinder's list included Jamiroquai, Diana Ross, Lorde, Stormzy, Craig David, The xx, Solange Knowles and Liam Gallagher.