C++ 2020, or C++ 20, draft was approved on September 04, 2020.
The International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) jointly published ISO/IEC 14882:2020, C++ 2020, in 2020.
Here are books about C++ 2020
To get certified in C++, click here.
Here are indicators that rank programming languages.