This is a patch release on the v1.0 branch.
Some of the most exciting things in this release are:
Python 3.14 support
Bugfixes for the solver
Support for MacOS Tahoe
v1.1.1 is still the latest release, this release is intended for users of the 1.0 release who are not ready to upgrade to 1.1. It includes important forward-compatibility enhancements for the config system to allow interoperability with the future 1.2 release.
Read it all in the release notes:
https://github.com/spack/spack/releases/tag/v1.0.3Thank you to everyone involved in making this happen.