Hello there,
We published a pre-release version of GNAT FSF 15 in the GNAT-FSF-builds repo, and it’s available as a preview in my fork of the alire index:
use alr index "--add=git+https://github.com/AldanTanneo/alire-index#stable-1.4.0" --name=gnat_fsf_15_rc1 --before=community to make the toolchain available.
For now, there is only GNAT Native for Linux (x86/aarch64), macOS (x86 only - the GCC repository we use for macOS Arm builds has not yet released a GCC 15 version) and Windows (x86). Cross compilers will come later.
The release also has an updated GPRbuild (25.0.0).
For now, both of these are marked as release candidates; I invite everyone to test them if you can, and if no big issues arise during your testing, we should be able to make a final release soon!