Finished reading the book. It's really more of an introductory guide, rather than an in-depth "this is what it can do" type of book.
The most they say about the DSI port is that it exists, it is designed for flat panel displays (such as smartphones and tables) and that these types of displays are rarely available for end-user purchase. (a situation that is, thankfully, changing in our favor)
I don't know much about the DSI standard. I would assume the pinouts are consistent and that panel displays that say they are for DSI application would plug right in.
I'm only wearing black until they find something darker.