Based on description it doesn't sound like SoC design, it sounds like a book about RISC-V microprocessors. To the untrained eye, that sounds similar, but a microprocessor is one part of an SoC, and sometimes it can be a very small part based off the role the microprocessor plays.
Judging by the authors, I'm sure the book will be excellent. Hopefully it will be available through O'Reilly Online, because the price is a bit steep.
What are some good books/resources on overall System-On-Chip Design?
There is a surprising paucity of material on SoC design which are comprehensive and complete. Application-specific tailored features, Cost, Performance, Area, Power etc. all go into SoC design and yet there does not seem to be a comprehensive resource bringing everything together. Even wikipedia isn't detailed enough - https://en.wikipedia.org/wiki/System_on_a_chip
I know of only two decent books viz. Computer System Design: System-on-Chip by Michael Flynn and Wayne Luk (this is pretty good) and the older ARM System-on-Chip Architecture by Steve Furber.
You know what. I feel like it’s a fair price.
Everything RISC-V is good (even the mistakes which is making it more robust and more mature).
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Excellent find, an academic paper announcing the book is here
https://peer.asee.org/57147.pdf
Harris and Harris (no relation) have an excellent book on digital design using RISC-V as the domain problem, https://pages.hmc.edu/harris/ddca/ddcarv.html
https://pages.hmc.edu/harris/ddca/
Their books are perfect, and I hope this textbook gets adopted by thousands of colleges. Our RISC-V future is bright, now we need one on SoC bringup and getting your OS running on that SoC.