Chapter 1. Overview

Installer and image creation

Key highlights for RHEL installer:

Key highlights for RHEL image builder:

For more information, see New features and enhancements - Installer and image creation.

Security

The system-wide cryptographic policies enable post-quantum cryptography (PQC) algorithms in all policies by default.

OpenSSL 3.5 introduces support for the ML-KEM, ML-DSA, and SLH-DSA post-quantum algorithms and adds the hybrid ML-KEM algorithms to the default TLS group list.

RHEL 10.1 introduces also support for RPMv6 signatures. This new format enables multiple signatures in an RPM package. You can use Sequoia PGP tools to sign RPM packages with PQC algorithms and create or verify OpenPGPv6 signatures.

See New features - Security for more information.

Kernel

RHEL 10.1 extends kernel-focused observability and energy tracking. Enhancements include upstream alignment for perf and BPF, broader uncore and core counters, Intel RAPL energy events, Intel Trace Hub (NPK) device IDs, AMD per‑core energy tracking, and modernized debugging with python-drgn alongside crash tooling updates. Entropy generation improves through rng-tools, delivering more consistent performance insights across current hardware generations.

Dynamic programming languages, web and database servers

Later versions of the following Application Streams are now available:

Later versions of the following web servers are now available:

See New features - Dynamic programming languages, web and database servers for more information.

Compilers and development tools

System toolchain

The following system toolchain components are available with RHEL 10.1:

Performance tools and debuggers

The following performance tools and debuggers are available with RHEL 10.1:

Performance monitoring tools

The following performance monitoring tools are available with RHEL 10.1:

.NET 10.0 is now available on RHEL

Red Hat Enterprise Linux (RHEL) supports .NET, a general-purpose development platform that features automatic memory management and modern programming languages, allowing you to build high-quality applications efficiently. This update adds support for the most recent version, .NET 10.0 (Long-Term Support), expanding the versions available on RHEL. Other supported versions include .NET 9.0 (Standard-Term Support) and the previous long-term support version, .NET 8.0.

For more information, see Release Notes for .NET 10.0 RPM packages and Release Notes for .NET 10.0 containers

Compiler toolsets

The following compiler toolsets are available with RHEL 10.1:

For detailed changes, see New features - Compilers and development tools.

The web console

The cockpit packages have been upgraded to version 344, which provides many improvements, most notably the upgrade to the Patternfly 6 system design.

See New features - The web console for more information.

In-place upgrade from RHEL 9 to RHEL 10

The supported in-place upgrade paths currently are:

For more information, see Supported in-place upgrade paths for Red Hat Enterprise Linux.

For instructions on performing an in-place upgrade, see Upgrading from RHEL 9 to RHEL 10.

Notable enhancements and bug fixes include:

In-place upgrade from RHEL 8 to RHEL 10

It is not possible to perform an in-place upgrade directly from RHEL 8 to RHEL 10. However, you can perform an in-place upgrade from RHEL 8 to RHEL 9 and then perform a second in-place upgrade to RHEL 10. For more information, see In-place upgrades over multiple RHEL major versions by using Leapp.

Red Hat Customer Portal Labs is a set of tools in a section of the Customer Portal available at https://access.redhat.com/labs/. The applications in Red Hat Customer Portal Labs can help you improve performance, quickly troubleshoot issues, identify security problems, and quickly deploy and configure complex applications. Some of the most popular applications are:

Red Hat Insights is now Red Hat Lightspeed. This is a change in name only and all the same product features, functionalities, and capabilities you have relied on under the Red Hat Insights name remain under the name Red Hat Lightspeed. With Red Hat Lightspeed, which is included with all RHEL subscriptions, you can proactively identify, examine, and resolve known technical issues. For instructions on how to install the client and register your system to the service, see the Red Hat Lightspeed documentation page.