The book and DVDs has the same omitions since the book is a transcription of the DVDs and no updated lines. There are even more lines  not covered, I discovered it in Correspondence Chess games. One example are Berlin with Bc5 are not covered at all, and some lines Bc5 lines where Nge7 was not covered only Nf6 (not that he line is good I got 1.5 of 2 vs the same even rated player in Correspondence Chess, I was close to win both). I was preparing for a game at local club and the Jänisch covered dissmissed an entire sub variation with a single correct start move move, but I met him before so I knew theory and won anyway.

But dont get me wrong I realy like the book, its deadly in over the board games and playable in Correspondence Chess as well but possible complement are advised in Correspondence Chess.

I have both the book and the DVD:s and I like the book better, better layout more easy to grasp etc. But probebly still same omissions in a couple of places as the DVD:s.

Perhaps that's why the one time I bought a chess DVD it was a waste of my money - I already had taken the first step in the opening presented a long time before.
I liked what I saw in GM Caruana's book.

tracke wrote on 07/12/21 at 21:51:12:

Three DVDs equates to 208 pages... Another argument (not that I needed one) against DVDs.

This reminds me of something I read once about the bicycle. It's a great way to get exercise, provided you keep pushing the whole time. But it's such an efficient mode of transport that it's also a great way to fool yourself into thinking you are getting exercise, cruising effortlessly around the neighborhood.

DVDs might be an easy way to learn a subject. But sometimes you don't want easy.

The following link to New in Chess should work:

https://www.newinchess.com/en_US/caruana-s-ruy-lopez

tracke 

PS: June 1st 2021 ; 380 pages ; 35 $

In the new in chess "Coming soon" section ("https://www.newinchess.com/coming-soon") there is a book with cover shown: "Caruana's Ruy Lopez: An White Repertoire for Club Players" by...Fabiano Caruana.  Clicking on it takes you to a wrong product, so no direct link possible yet.

I'd assume this is based on these DVDs but not enough information yet. If it is truly his work then he is easily the highest rated book author ever but I would have assumed he had more important things to do.

In general this DVD set seems to have a bunch of holes in places, which is a shame.

The things Caru talks about things are all excellent (ok, he doesn't go into super depth and eg doesn't cover Gustafssons recommendation against 8.a4, but naturally you can't go over everything ever); if you actually do get one of his lines, you are good to go.

But then eg in the good old Steinitz defence, after 1.e4e5 2.Nf3Nc6 3.Bb5d6 4.d4exd4 5.Nxd4Bd7 6.0-0, he somehow only goes over 6..g6 followed by ..Ne7, not even mentioning the by far most popular Black setup (of 6..Nf6 followed by ..Be7); 8..Bd7 after 7..d6 8.a4 missing was mentioned in this thread already; and this feels like it carries through every line.

A random click into the first best video, accompanied with a DB: Open Spanish;
9.Qe2 has 407 games in the Lichess Master DB. 71x (2nd most popular move) 9..Bc5, 26x 9..Nc5.
9..Nc5 gets 25 minutes of coverage in the first video of the Open Defence; 9..Bc5 apparently deserves roughly 5 seconds ("10.Be3 Bxe3 Qxe3, Rd1 to follow" is all that Caru gives, with 10..Bxe3 already only being the third most popular move, at 11/55 games).

It's a treat to hear an SGM talk as always, but this certainly does not feel like a standalone complete repertoire.

Perhaps the series would've worked out a bit better if Caruana had focussed on actually laying out a repertoire, instead of talking at length about why he didn't choose variation X - so eg in the Open Spanish vid, there's 1.5 minutes of talk on current developments in 9.Nbd2; I personally would much rather have those 1.5 minutes spent on 9.Qe2 Bc5, something I will actually play and potentially encounter.
On the other hand, that type of general knowledge is of course always good to have, so who knows..

Overall, the Spanish is thankfully an opening, where omissions of concrete theory are rarely going to backfire badly for White, but I do think an Opening series shouldn't immediately leave me with a feel of "I would have liked better coverage of.. everything"
Perhaps it doesn't help that Spanish Mainline content has been undergoing an untterly dry spell, so rather than "I got 90% covered, and want some updates/alternatives on the critical lines", this was more of a "I want to learn everything" type of deal for me, but I do think that eg the Black series by Gustafsson vs 1.d4 @chess24 does its job of educating the viewer much better.
Pretty disappointed that I still don't even have a convincing solution that punishes Black for 3..d6

I do have to say though, that the original fear of Caruana lacking explanations and making a phonebook file series that's impossible to enjoy at sub-GM level was entirely unfounded.
Guidance is plenty, and following it is a breeze. He does a very good job at keeping the viewer engaged & able to watch multiple vids in a row, while retaining information & without breaking into a sweat.