It’s a book with short stories and art from the different regions of the game. This is how it looks like if anyone wonders https://www.youtube.com/watch?v=ECUo2bWN3k4.

But considering that Valve has not even released an actual official map of the Dota world, and afaik it doesn’t even have a name this wish sounds very delusional.

Since Valve did not announce anything at TI either i wonder if we will ever get anything Lore-related again.