Welcome to CentOS Stream 10 "Coughlan", the latest version of the CentOS Project distribution.
CentOS Stream defines Enterprise Linux. It is a Linux distribution built by Red Hat Enterprise Linux (RHEL) engineers, and is used as the major version branch that RHEL minor versions are created from. It has roughly a five year lifecycle and will be maintained until 2030. The exact date will be contingent on the end of the Full Support phase of RHEL 10.
These architecture build targeting a specific level of processor capabilities.
Targeting newer levels enables desirable optimizations,
but also sets the minimum hardware requirement.
You can check what levels your CPU supports by running ld.so --help.
A notable change in this release is that the AMD/Intel 64-bit build now targets the v3 microarchitecture level.
CentOS Stream 10 is distributed through two main DNF repositories, BaseOS and AppStream. The CRB repository is also available, but is disabled by default.
Packages in the BaseOS repository are intended to provide the core set of operating system functionality. These packages are maintained for the full lifecycle of the operating system.
Packages in the AppStream repository include additional user-space applications, runtime languages, and databases to accomodate various workloads and use cases. Many of these packages are maintained for the full lifecycle of the operating system, but some have shorter independent lifecycles. The specific lifecycle dates will be determined by the corresponding Application Stream in RHEL 10. Optional alternative versions of select software are expected to be added over time.
Packages in the CRB repository are intended to accomodate development use cases.
CentOS Stream 10 includes several notable new features and enhancements.
Earlier versions of CentOS Stream utilized a technology called modularity to provide optional alternative versions of select software. CentOS Stream 10 will instead use traditional non-modular RPM packages for this purpose.
CentOS Stream 10 does not include some packages that were previously included in CentOS Stream 9.
Xorg server (xorg-x11-server-Xorg) is no longer included.
Wayland is the default display stack,
with Xwayland (xorg-x11-server-Xwayland) available as a compatibility layer for legacy X11 applications.
You can read more about this transition in the blog post
Red Hat Enterprise Linux 10 plans for Wayland and Xorg server.
Most graphical desktop applications have been removed. This includes:
RHEL is transitioning to providing desktop applications via Flatpak. CentOS users who want these applications are encouraged to install them from Flathub or request them in EPEL.
Redis has been replaced with Valkey, a Redis fork.
At this time, CentOS Stream 10 does not work with secureboot enabled. This is currently blocked on a shim review.
This page is intended as an overview of the basic properties of CentOS Stream 10, but it is not an exhaustive list of all changes and topics. The RHEL 10 Beta documentation provides additional notes and guides which mostly apply to CentOS Stream as well.