Release 9 Users Guide? (And - CNUT 3.12?)

I was able to find the release 8 users guide, but only notes on any 9.X version.

Is there not a release 9 users guide?

Also, a few people have very graciously offered advice about upgrades, but mentioned using 3.11 instead of 3.12 - is there any major difference because I can only find/download 3.12.

Thanks again,


3.12 replaced 3.11 and will still read the .pkg3 files. it was updated to support the new P11 hardware and should work just fine for upgrading to 9.x