# 2021 Release note

* [December 2021 Release Note](/ja/release-notes/archive/2021/december-2021-release-note)
* [November 2021 Release Note](/ja/release-notes/archive/2021/november-2021-release-note)
* [September 2021 Release Note](/ja/release-notes/archive/2021/september-2021-release-note)
* [October 2021 Release Note](/ja/release-notes/archive/2021/october-2021-release-note)
* [August 2021 Release Note](/ja/release-notes/archive/2021/august-2021-release-note)
* [July 2021 Release Note](/ja/release-notes/archive/2021/july-2021-release-note)
* [June 2021 Release Note](/ja/release-notes/archive/2021/june-2021-release-note)
* [May 2021 Release Note - 2.0](/ja/release-notes/archive/2021/may-2021-release-note-2-0)
* [May 2021 Release Note](/ja/release-notes/archive/2021/may-2021-release-note)
* [April 2021 Release Note](/ja/release-notes/archive/2021/april-2021-release-note)
* [March 2021 Release Note](/ja/release-notes/archive/2021/march-2021-release-note)
* [February 2021 Release Note](/ja/release-notes/archive/2021/february-2021-release-note)
* [January 2021 Release Note](/ja/release-notes/archive/2021/january-2021-release-note)