Embarcadero has RTM'd RAD Studio, Delphi and C++Builder 10.3 Rio (version 20.0) today. You can read the press release here. Included in the release are several C++ compilers.
Here are the command line version details for each compiler.
C++Builder 10.3 Rio (20.0) C++ Compilers
BCC32 - the classic 32-bit windows compiler
BCC32C - Clang-enhanced compiler with a command line flag compatible only with BCC32 (the classic compiler)
BCC32X - command line flag compatible with other...
C++Builder customers have been asking for C++11 for Win32 ever since we released C++11 support for Win64, iOS and Android. It's here now in C++Builder 10 Seattle. Here are some Embarcadero DocWiki links to take a look at.
C++Builder 10 Seattle product page - http://www.embarcadero.com/products/cbuilder
Clang-based C++ compilers - http://docwiki.embarcadero.com/RADStudio/Seattle/en/Clang-based_C%2B%2B_Compilers
C++11 language features supported by Clang-based compilers - http://doc...