An expanded soundtrack for Star Trek II: The Wrath of Khan was released on Retrograde Records (affiliated with Film Score Monthly) in 2009. It contains additional, never-before-released soundtrack music from the film. I ordered a copy of the CD via the Screen Archives Entertainment website on 20 July 2009.
The CD includes a very informative insert booklet. I no longer have a decent turntable so it was doubly exciting for me to not only have music that wasn't on the original record but to also be able to hear the soundtrack with digital clarity for the first time.