Version/ja

MediaWiki にはいくつかバージョンがあり、いつでもダウンロードできます. 拡張機能にもさまざまなリリース状態があります.

開発バージョン
開発バージョンを使用するには、trunk をGit からダウンロードしてください. 全般的にかなり安定しており、この trunk からダウンロードしたもので動作しているウィキも一部あります.

ベータバージョン
The beta version has been reviewed and is thought to be good. It is more stable than the trunk. However, you are encouraged to report any bugs you encounter to Bugzilla, so that they can be fixed for the officially stable version.

Stable version
The stable version is even more stable than the beta. It will receive maintenance and security fixes until it becomes a legacy version.

Legacy version
The legacy version is even more stable than the beta. It is like a stable version but will only receive security fixes during the period of one year after its release. Some legacy versions (e.g. MediaWiki 1.19; see Debian/Ubuntu#Status), are designated as long-term supported (LTS).

Older versions
Older versions are no longer supported and will not receive security fixes; see Version lifecycle.

Extensions
Extensions can be classified as unstable, experimental, beta, stable, or unknown; see here for more details.