C++20

C++20 features are now confirmed and have been frozen. No new features now for C++20 - any new features are for C++23!

See
https://herbsutter.com/2019/02/23/tr...-meeting-kona/
https://www.reddit.com/r/cpp/comment...ip_report_c20/

C++20 will see the biggest change to the C++ language since C++11 - bigger than C++17 as it includes ranges, modules and co-routines! Now the emphasis is on producing the C++20 standard document that reflects the agreed c++ changes and features.

The current draft C++20 standard is N4791 available at http://www.open-std.org/jtc1/sc22/wg...2018/n4791.pdf Expect subsequent draft C++20 standards to be produced until it is finalised around at the Spring 2020 meeting. Note that the drafts are free but the final standard is not and has to be bought!

For changes between C++17 and C++20, see http://www.open-std.org/jtc1/sc22/wg...0/p2131r0.html

For compiler support, see https://en.cppreference.com/w/cpp/compiler_support

Draft standard documentation relating to C++20:

21 Jan 2019 N4800 http://www.open-std.org/jtc1/sc22/wg...2019/n4800.pdf
15 March 2019 N4810 http://www.open-std.org/jtc1/sc22/wg...2019/n4810.pdf
18 June 2019 N4820 http://www.open-std.org/jtc1/sc22/wg...2019/n4820.pdf
15 August 2019 N4830 http://www.open-std.org/jtc1/sc22/wg...2019/n4830.pdf
8 Oct 2019 N4835 http://www.open-std.org/jtc1/sc22/wg...2019/n4835.pdf
27 Nov 2019 N4842 http://www.open-std.org/jtc1/sc22/wg...2019/n4842.pdf
14 Jan 2020 N4849 http://www.open-std.org/jtc1/sc22/wg...2020/n4849.pdf
1 April 2020 N4861 http://www.open-std.org/jtc1/sc22/wg...2020/n4861.pdf

Also see https://timsong-cpp.github.io/cppwp/n4861/ for an on-line version.