The first release candidate for GCC 14.3 is available from https://gcc.gnu.org/pub/gcc/snapshots/14.3.0-RC-20250515/ ftp://gcc.gnu.org/pub/gcc/snapshots/14.3.0-RC-20250515/
and shortly its mirrors. It has been generated from git commit r14-11789-gaa4cd614456de6. I have so far bootstrapped and tested the release candidate on x86_64-linux. Please test it and report any issues to bugzilla. If all goes well, we'd like to release 14.3 on Friday, May 23th.