The GCC developers are proud to announce a new major GCC release, 13.1.

GCC 13.1 Released

by Richard Biener

From the announcement:

The C frontend got support for several C23 features, the C++ frontend for C++23 features.  The C++ standard library experimental support for C++20 and C++23 was enhanced.  For the C family of languages you can now use -fstrict-flex-arrays[=level] to control the behavior for the various legacy forms of specifying flexible array members.