CachyOS has shipped its fourth release of 2026, introducing significant performance optimizations and the new Hyprland Noctalia desktop option. The package stack now includes extended PGO for Python, boosting runtime performance, while a GCC patch improves branch misprediction handling on modern Intel and AMD processors. Pacman gains network isolation for scriptlets and hooks, and the team fixed a Phoronix Benchmarks regression affecting high core count systems.

The installer adds the Hyprland Noctalia desktop option with an integrated preview video, helping users evaluate the interface before installation. Paru has been removed from the default installation, with Shelly positioned as the recommended AUR helper instead. Mango WM now uses SDDM for display management, and GNOME System Monitor gets replaced by Resources. Audio installations include realtime-privileges, while live sessions improve keyboard layout detection.

CachyOS-Welcome introduces DNS-over-QUIC support through blocky with custom endpoint configuration, plus a dedicated Troubleshooting page and Ptyxis terminal compatibility. New Azerbaijani and Greek localizations join updated translations for Italian, German, French, Japanese, and Bulgarian. chwd resolves multi-GPU driver conflicts and ships 32-bit Vulkan drivers for virtual machines, while cachyos-settings applies 15-second startup and 10-second shutdown timeouts to user services, eliminating lengthy shutdown delays.

These updates reflect CachyOS's focus on performance tuning and user experience refinements for Arch-based Linux users seeking optimized out-of-the-box configurations.