Recently released is a great hardcover book, "DC Cinematic Universe: A Celebration of DC at the Movies" (DK/Penguin Random House, 2024), which contains three double-page spreads on "Batman '66", mainly the theatrical movie but also some coverage of the parent TV series and the two, more recent, animated movies! Highly recommended!
DK survives as an imprint, but the original UK company went bankrupt by over-investing in the licence for “Star Wars: Episode One”. Warehouses of books all over the world were pulped.