[pdevr]

Piggybacking on this: Is there any book out there which covers C++ 20? Most of the reference books suggested on forums (SO, IRC/Discord channels) seem to cover C++ 17 or 14, or even worse, 11.

[sptth]

Afaik major changes where introduced in C++11 and later on in C++17. I would be happy finding anything that covers up to the C++17 standard.