The Park Stage webpage on the Glasto website gives details that Rabbit hole is closing and that 2 new venues are opening instead: https://www.glastonburyfestivals.co.uk/areas/the-park/
"First up, The Wishing Well. A place in which to ignite your deepest desires and unfurl your wildest wishes. Re-awaken all that inspires you, because at The Wishing Well – where dreams are made – hope springs eternal!
Further round the field, is the Park’s second new fun house: Scissors! An utterly delicious femme-queer venue where anything can (and does!) happen. Head to Scissors for a cut, or just come along to enjoy some of the daily talks, then slip out the back to discover a queer wonderland. Relax in the beer garden and play pool, or catch a movie in Flick Shack. With nightfall comes a twilight roster filling Kiki’s nightclub, where kaleidoscopic walls will keep you dancing til dawn.
These two new venues replace the legendary Rabbit Hole, which we bid a fond farewell to after 17 years."