Fedora Linux 42 was released today[[1]]. The Fedora CoreOS `testing` stream has 
been rebased and 
is currently rolling out. This update will come to the `stable` stream in a few 
weeks. 

For more information about Fedora 42, see the Fedora Project’s list of official 
Changes[[2]]
and the Fedora CoreOS analysis of each Change[[3]].


There were a lot of changes on the Fedora CoreOS side going into this release 
that may require attention:

- In Fedora 42, all newly provisioned nodes will now be pulling updates from 
the OCI
  registry at quay.io/fedora/fedora-coreos [[4]]. In the coming months existing 
nodes
  will be migrated as well using a migration script[[5]]. This has the 
potential to
  cause disruption in environments where proxies or firewalls need to be 
updated for
  this change.
- In Fedora 42, CoreOS has changed the backend for almost all disk image 
building
  to use OSBuild[[6]][[7]]. We don't expect any meaningful changes to user 
experience
  as a result of this.
- In Fedora 42, the CoreOS Live ISO/PXE artifacts were changed to use EROFS as a
  backing filesystem[[8]].
- In Fedora 42, the `pam-ssh-agent` RPM has been dropped[[9]]. If you layered 
this
  package previously it will need to be removed before systems can be updated.

Please test out the `next` stream and report any issues in our issue 
tracker[[10]]!

The Fedora CoreOS Team

[1]: https://fedoramagazine.org/announcing-fedora-linux-42/
[2]: https://fedoraproject.org/wiki/Releases/42/ChangeSet
[3]: https://github.com/coreos/fedora-coreos-tracker/issues/1838
[4]: https://github.com/coreos/fedora-coreos-tracker/issues/1823
[5]: https://github.com/coreos/fedora-coreos-tracker/issues/1890
[6]: https://github.com/coreos/fedora-coreos-tracker/issues/1891
[7]: https://github.com/coreos/fedora-coreos-tracker/issues/1725
[8]: https://github.com/coreos/fedora-coreos-tracker/issues/1852
[9]: https://fedoraproject.org/wiki/Changes/Remove_pam-ssh-agent_component 
[10]: https://github.com/coreos/fedora-coreos-tracker
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