Do you happen to know if they are using the broadcast or home video version? The US Blu-ray uses broadcast version.
The home video version has a lighting/shadow effect that's missing in broadcast version.There's the NHK logo at the end of episode 20 (in next episode teaser), if that is anything to go by. I don't see any difference in the video embedded with your tweet however.
It's full of artwork and production material. There's little to no text except the description of the main characters (which makes up less than half a page when all are considered together).How's the book like? It is more artworks and illustrations, productions materials etc. or leaning onto interviews et al?