unissued

adj

1. (not-comparable)That has not been issued

   “But the mono albums can be had only in a 13-disc boxed set, “The Beatles in Mono,” for $298.98, which covers up to the White Album (the last album the group mixed in mono) and includes a mono version of the “Past Masters” singles compilation that includes previously unissued mono mixes of “Across the Universe” and songs from the “Yellow Submarine” soundtrack.”