Found a couple of interesting manual scans

NeXT 0.9-1.0 Release Description

This one is for early NeXT owners with machines running NS 0.8. It details the changes coming in 0.9 and 1.0.

NeXT Third Party Programs and Products

Lists various third-party products available and planned. There's at least a couple in here that I don't think ever materialised (MOTU Performer and Media Logic Artisan).

Both are from March 1989.

Get them here (https://vtda.org/docs/computing/NeXT/).

Just a little update: while going through this part of the forum I found that these were originally posted here (https://www.nextcomputers.org/forums/index.php?topic=2615) by balrog back in 2010. I should have searched the forum first. Instead I checked the file archive and posted them when I couldn't find them there.