We knew this was coming.
"They’ll launch Interstellar Overdrive – a previously unheard mono instrumental recording of the 1966 track – on April 15 on heavyweight 180-gram vinyl.
It’ll play at 33⅓ RPM and will come with a fold-out poster and an A6 postcard featuring a classic image of the band taken while they were recording their debut single Arnold Layne."
What's on the 'b' side? Any info?