The Linux 7.4 merge window closed as scheduled despite the fact that Linus Torvalds was on holiday during the period, according to Phoronix which reported the release on November 1. Greg Kroah-Hartman made the -rc1 build available shortly thereafter.

The -rc1 changelog covers changes across the full spectrum of subsystems: architecture updates for x86, ARM, and RISC-V platforms; filesystem-level refinements touching both the core VFS infrastructure and individual low-level drivers; extensive performance tooling updates centered on perf plus self-test improvements; and core kernel work including networking stack adjustments, new Rust Direct Rendering Manager (DRM) driver infrastructure led by NVIDIA's open-source Nova GPU driver, expanded eBPF helper functions, and several memory-management optimisations.

For enterprise IT teams managing heterogeneous server fleets, the breadth of this release signals that the current kernel cycle is absorbing a significant volume of hardware enablement alongside stability work. The Rust DRM additions are particularly noteworthy for long-term graphics-stack maintenance, as NVIDIA continues building out its in-kernel Rust code base intended to eventually supersede Nouveau.

Background and significance: This is the first major milestone heading toward the stable Linux 7.4 expected in late January or early February 2027. Teams running production kernels on the 7.2.y or 7.3.y branches should plan test cycles around -rc1 and subsequent releases to validate their specific hardware and workload paths before any upgrade decision.

Source: Details were reported by Michael Larabel at Phoronix.