Ubuntu adds Amd64v3 ISO downloads for 26.10

Ubuntu 26.10 daily builds now offer an amd64v3 installer, letting you try out a CPU-optimised package set from the off, without any post-install reconfiguration. The distro began building amd64v3 packages as an opt-in archive last year, though Ubuntu 26.04 LTS continues to use the standard amd64 (v1) baseline by default (there have been hiccups along the way, so that decision was a wise one). While Ubuntu 26.04 LTS can be manually converted to use amd64-v3 package sources after a standard install, the appearance of Ubuntu 26.10 daily builds that use it by default skip that; it boots from and installs v3-optimised packages […]
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https://www.omgubuntu.co.uk/2026/09/ubuntu-amd64v3-iso-downloads