Just updated to using the new iCloud-enabled iBooks for PDFs, etc. On my Macbook, I've also gone and fixed the metadata for all of the books, but it doesn't appear to sync that updated metadata to my iPhone (which is also iCloud-enabled for iBooks). Here's a screenshot from the Mac app:
But on the iPhone, I'm still missing authors, categories are incorrect, etc. Not sure if metadata simply syncs locally and this is a non-issue, or if something odd is going on w/ my devices. Thanks!
Best Answer
Found a solution; not through iBooks but the Terminal instead (must install Homebrew first):
This actually edits the PDF metadata, and that will reflect in the Title, Author, and Category columns in iBooks.