Digital download through Rhino/Atlantic issued internationally on 9th June 2017. Amazon's digital music page for this album gives the original issue date as May 6, 1969 (Tuesday). Album was reviewed in Billboard issue dated May 3rd, 1969 (Saturday).
Is the release date shown here correct? The code 7007 on the back cover suggests July 1970. Unfortunately this didn't get reviewed in Gramophone, which might have given weight to a particular date.