first few C++26 core language features have been voted into the C++ Working Draft at the Varna meeting:
- P2738R1 constexpr cast from void*: towards constexpr type-erasure
- P2741R3 User-generated static_assert messages
- P2169R4 A nice placeholder with no name
Btw, here is the plan for C++26: https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p0592r5.html
And here is the Sutter’s Trip report of the metting with the complete list: https://herbsutter.com/2023/06/16/trip-report-summer-iso-c-standards-meeting-varna-bulgaria/