Rapper Kanye West and rockers the Foo Fighters have already been announced as bill-toppers for the music event but the act booked for Sunday night's closing slot on the famous Pyramid stage remains a mystery.
Eavis has now dropped a big hint during an appearance at an event at the Victoria & Albert Museum in London on Tuesday night (21Apr15), revealing, "It is going to be two British bands... They will be joining forces - that's not been done really."
The announcement will be made on 1 June (15).
Glastonbury takes place in Somerset, England between 24 to 28 June (15).