Ubuntu version history

Rare card · No. 29797

Releases of Ubuntu—a Linux operating system mostly composed of free and open-source software—are made semiannually by Canonical Ltd using the year and month of the release as a version number. The first Ubuntu release, for example, was Ubuntu 4.10 and was released on 20 October 2004. Consequently, version numbers for future versions are provisional; if the release is delayed until a different month (or even year) than planned, the version number will change accordingly. Releases are scheduled every April and October to incorporate new GNOME releases made every March and September. Free support is offered and includes security updates for "main" free software packaged. Every fourth release, scheduled for April of every even-numbered year, is designated as a long-term support (LTS) release, meaning it receives free support for five years. Non-LTS releases are designed as interim releases and receive free support for nine months. The Expanded Security Maintenance (ESM) service from the Ubuntu...

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