Just applied the update.
Glad I was wrong to assume Amazon wouldn't add KF8.
I played with KF8 comic book format (Watchmen) and it works just fine, even displays in color! (well not really) Panel View is on by default, and unlike other KF8 implementations, you can zoom and pan the page or panel view. It uses the entire screen, i.e. no margins. I think they should have had 'Actual Size' as the panel view Zoom default rather than 'Fit-to-screen', as the latter suffers from scaling artifacts. No bookmarks/sharing/TOC. But otherwise, most excellent!