Answer: inutero

AnswerCrossword Clue
INUTEROLike some surgery
INUTEROStill being developed
INUTEROStill undelivered
INUTERONirvana's last studio album
INUTEROGestating
INUTEROWhence "Heart-Shaped Box" and "Pennyroyal Tea"
INUTERO1993 5x platinum Nirvana album
INUTEROUnder development?
INUTERONot yet delivered
INUTERONirvana album released after "Incesticide"
INUTEROYet to be delivered
INUTERO1993 Nirvana album
INUTEROStill to be delivered
INUTEROSoon to be delivered, perhaps
INUTEROAs yet unborn
INUTERONot yet born
INUTEROUnborn
INUTEROBefore birth