都2025年了，请问HarmonyOS鸿蒙Next官方计划什么时候完全支持c++17？

都2025年了，请问HarmonyOS鸿蒙Next官方计划什么时候完全支持c++17？ 参考的官方ndk构建

CMakeList.txt如下

CMAKE_MINIMUM_REQUIRED(VERSION 3.15)

PROJECT(HELLO)

set(CMAKE_CXX_STANDARD 17)

add_definitions(-std=c++17)

ADD_EXECUTABLE(hello hello.cpp)

hello.cpp

#include <stdio.h>

int main()
{
    const bool a = std::is_floating_point_v<float>::value;
    printf("hello world!\n");
    return 0;
}

编译报错

C:\PROGRA~1\HuaWei\DEVECO~1\sdk\default\OPENHA~1\native\llvm\bin\CLANG_~1.EXE --target=aarch64-linux-ohos --gcc-toolchain="C:/Program Files/HuaWei/DevEco Studio/sdk/default/openharmony/native/llvm" --sysroot="C:/Program Files/HuaWei/DevEco Studio/sdk/default/openharmony/native/sysroot"   -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -fno-addrsig -Wa,--noexecstack -Wformat -Werror=format-security   -D__MUSL__ -std=gnu++17 -fPIE   -std=c++17 -MD -MT CMakeFiles/hello.dir/hello.cpp.o -MF CMakeFiles\hello.dir\hello.cpp.o.d -o CMakeFiles/hello.dir/hello.cpp.o -c C:/hw/test/oh5cmake/hello.cpp
clang++: warning: argument unused during compilation: '--gcc-toolchain=C:/Program Files/HuaWei/DevEco Studio/sdk/default/openharmony/native/llvm' [-Wunused-command-line-argument]
C:/hw/test/oh5cmake/hello.cpp:5:25: error: no member named 'is_floating_point_v' in namespace 'std'
    const bool a = std::is_floating_point_v<float>::value;
                   ~~~~~^
C:/hw/test/oh5cmake/hello.cpp:5:50: error: expected '(' for function-style cast or type construction
    const bool a = std::is_floating_point_v<float>::value;
                                            ~~~~~^
C:/hw/test/oh5cmake/hello.cpp:5:53: error: no member named 'value' in the global namespace
    const bool a = std::is_floating_point_v<float>::value;
                                                  ~~^
3 errors generated.

请问，官方计划啥时候支持完整的c++17呢？