一、概述
在Android Studio下載官網上，有如下介紹：
`
Android Studio's built-in update mechanism can be set to receive updates through any one of these 4 channels.
- Canary: Bleeding edge, released about weekly. These are early previews released in order to obtain real-world feedback during development. The canary channel will always have the latest build, including updates to beta or stable releases. We recommend running canary builds side-by-side with a beta or stable installation.
- Dev: Canary builds after a full round of internal testing get promoted into the Dev Channel.
- Beta: Release candidates based on stable canary builds, released and updated to obtain feedback prior to the stable release. The beta channel will be updated with new stable builds until a new canary build goes to beta.
- Stable: The official stable release, as available from the Android Developer site.
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翻譯過來就是就是這個意思：
Android Studio內置的更新機制被設置成為如下四個可選的版本：
- Canary（金絲雀）：Bleeding Edge（一種最新的、因而也並非完美的技術）,大約周更。這是最早被發布的預覽版本，為了能夠在開發過程中獲得真實世界的反饋。金絲雀版本會一直擁有最新的版本包括beta、stable發布版的更新。我們建議在安裝金絲雀版本的同時再安裝一個beta版本或者stable版本。
- Dev（開發版）：金絲雀版本在經過完整的測試之后會被提升到Dev版本。
- Beta（Beta版）：發布預選基於穩定的金絲雀版本。被發布並更新以獲取反饋先於穩定版本。Beta版本將與一個新的穩定版本一起被更新，直到一個新的金絲雀版本被確定為Beta版本。
- Stable（穩定版）：從Android Developer網站上可獲得的穩定版本。
各個版本下載地址：Canary, Dev, Beta, Stable.
二、增量更新
此點參考 android studio增量更新
三、參考
https://sites.google.com/a/android.com/tools/download/studio
http://www.eefocus.com/xiaodan/blog/07-06/2419_db128.html