I was looking for something, clicked on my profile picture in the upper right, and saw "My Guidebook." I've clicked that before only to be brought to a kind of general page showing different cities. This time - excitement! All my guidebooks are listed, and when you hover over each, you're given the choice to either edit or share.
I tried out all the links, and now, instead of a PDF with a little map next to each entry, each item in the guide has color photos and a hyperlink that brings you to a page with more information, including all the contact info for the place. (Screenshot below.)
Even better - I can now create one guidebook for the area that will suit all three listings, and simply share that guidebook with every guest.
I was on the verge of trying to create a digital guidebook off-platform, but didn't really want to replicate work or pay a monthly fee. So I think this is wonderful! Thanks, Airbnb! You've made my life a million times easier!