What's New In Red Hat OpenShift Virtualization 4.21
Red Hat, March 27,2026
Red Hat OpenShift Virtualization 4.21 is now Generally Available. The release of Red Hat OpenShift Virtualization 4.21 introduces new capabilities that simplify virtual machine (VM) management, enhance operational efficiency, and expand deployment flexibility across hybrid and multi-cloud environments.
This release brings streamlined VM administration with multi-cluster management, guided networking configuration through new physical and virtual network creation workflows, and generative AI-powered assistance with OpenShift Lightspeed integrated directly into virtualization operations.
Additional highlights include cross-cluster live migration with zero downtime, storage-agnostic incremental backups through change block tracking, MIG vGPU support for shared GPU resources, expanded availability on Google Cloud bare metal, and enhanced networking and high-availability capabilities for mission-critical workloads. Read below to learn more about this release.