The festival, which runs from 23-27 June, had already confirmed U2 as headliners for the Friday (25 June).
However, Eavis revealed that Muse would headline the Saturday (26 June) and that it was "probable" the legendary Stevie Wonder would close the festival as the main act on the Sunday (27 June).
Fans of the festival have been waiting for months to see who the major acts would be, as this year the event celebrates its 40th birthday.
Rumoured bands have included Radiohead, The Rolling Stones and Led Zepplin. However, it now appears that Wonder is going be the final headline act.
Eavis also revealed the event cost £25m to put on each year, with most of the money going to securing the perimeter.
Each year seven local farms are taken over to produce the festival, which is again exapading in size this year to accommodate people's appetite for larger tents. There are also discussions to ban large flags at the event in an area in front of the stage. Eavis said he was keen to clear a line of sight for the audience but his daughter, Emily, who also runs the event, wanted the flags to stay.
In 2009 Glastonbury donated £2m to charity as a result of money raised through producing the festival.
The Event Production Show continues until tomorrow.
To add a comment register and let us know your thoughts.