What ???? It's Universal, meaning it WILL work on a G5 ??
Yup, you can grab one from your local "brick and mortar" Apple Store (unless they sold out, of course!).
Has anyone found a PDF manual for L9 on Apple's site?
The only documentation I've found is in HTML format, so not savable.
I think you're right, that's the new way they're doing manuals now. It definitely has some advantages-it's very easy to internally update an HTML page if an update changes behavior, or if a section of the manual is poorly written, they can revise just that section without needing to distribute an entirely new PDF.
However, you definitely have options to save it if you want:
From the "in Logic" browser viewer:
Select Print... then in the print dialog choose "Save As PDF" from the PDF menu.
From Safari/Web Browser:
Choose either "Save As" or as above (Print then Save as PDF)