Ubuntu 26.04 LTS drops the X11 session entirely for GNOME 50 on Wayland, ships Rust-based core utilities (including sudo-rs) by default, and adds native CUDA and ROCm packages to its repositories for the first time. Livepatch now covers Arm64, TPM-backed full-disk encryption lands in the installer, and the minimum RAM requirement jumps to 6GB. Codename: Resolute Raccoon.