Release Lifecycle#

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What is a Release Lifecycle?#

During each monthly release, Mattermost backports high severity or high impact security fixes to the previous three monthly releases. Extended Support Releases receive backports for security fixes and major bug fixes for the length of their life cycle. Once a release life cycle has ended, it will no longer receive the security or major bug backports. We follow the same release cycle pattern for all upcoming releases.

Important

Support for Mattermost Server v8.1 Extended Support Release has come to the end of its life cycle on May 15, 2024. Upgrading to Mattermost Server v9.5 or later is required.

Version

Release Type

Lifecyle Start Date

Lifecycle End Date

9.9

Feature

2024-06-16

2024-09-15

9.8

Feature

2024-05-16

2024-08-15

9.7

Feature

2024-04-16

2024-07-15

9.6

Feature

2024-03-16

2024-06-15

9.5

Extended Support Release

2024-02-16

2024-11-15

9.4

Feature

2024-01-16

2024-04-15

9.3

Feature

2023-12-16

2024-03-15

9.2

Feature

2023-11-16

2024-02-15

9.1

Feature

2023-10-16

2024-01-15

9.0

Major

2023-09-16

2023-12-15

8.1

Extended Support Release

2023-08-16

2024-05-15

8.0

Major

2023-07-16

2023-10-15

7.10

Feature

2023-04-16

2023-08-15

7.9

Feature

2023-03-16

2023-07-15

7.8

Extended Support Release

2023-02-16

2023-11-15

7.7

Feature

2023-01-16

2023-04-15

7.5

Feature

2022-11-16

2023-02-15

7.4

Feature

2022-10-16

2023-01-15

7.3

Feature

2022-09-16

2022-12-15

7.2

Feature

2022-08-16

2022-11-15

7.1

Extended Support Release

2022-07-15

2023-05-15

7.0

Major

2022-06-15

2022-09-15

6.7

Feature

2022-05-16

2022-08-15

6.6

Feature

2022-04-16

2022-07-15

6.5

Feature

2022-03-16

2022-06-15

6.4

Feature

2022-02-16

2022-05-15

6.3

Extended Support Release

2022-01-16

2022-10-15

6.2

Feature

2021-12-16

2022-03-15

6.1

Feature

2021-11-16

2022-02-15

6.0

Feature

2021-10-13

2022-01-15

5.39

Quality

2021-09-16

2021-12-15

5.38

Feature

2021-08-16

2021-11-15

5.37

Extended Support Release

2021-07-16

2022-04-15

5.36

Feature

2021-06-16

2021-09-15

5.35

Feature

2021-05-16

2021-08-15

5.34

Feature

2021-04-16

2021-07-15

5.33

Feature

2021-03-16

2021-06-15

5.32

Feature

2021-02-16

2021-05-15

5.31

Extended Support Release

2021-01-16

2021-10-15

5.30

Feature

2020-12-16

2021-03-15

5.29

Quality

2020-11-16

2021-02-15

5.28

Feature

2020-10-16

2021-01-15

5.27

Quality

2020-09-16

2020-12-15

5.26

Feature

2020-08-16

2020-11-15

5.25

Extended Support Release

2020-07-16

2021-04-15

5.24

Feature

2020-06-16

2020-09-15

5.23

Quality

2020-05-16

2020-08-15

5.22

Feature

2020-04-16

2020-07-15

5.21

Quality

2020-03-16

2020-06-15

5.20

Feature

2020-02-16

2020-05-15

5.19

Extended Support Release

2020-01-16

2020-10-15

5.18

Feature

2019-12-16

2020-03-15

5.17

Quality

2019-11-16

2020-02-15

5.16

Feature

2019-10-16

2020-01-15

5.15

Quality

2019-09-16

2019-12-15

5.14

Feature

2019-08-16

2019-11-15

5.13

Quality

2019-07-16

2019-09-15

5.12

Feature

2019-06-16

2019-08-15

5.11

Quality

2019-05-16

2019-07-15

5.10

Feature

2019-04-16

2019-06-15

5.9

Extended Support Release

2019-03-16

2020-04-15

5.8

Feature

2019-02-16

2019-04-15

5.7

Quality

2019-01-16

2019-03-15

5.6

Feature

2018-12-16

2019-02-15

5.5

Quality

2018-11-16

2019-01-15

5.4

Feature

2018-10-16

2018-12-15

5.3

Feature

2018-09-16

2018-11-15

5.2

Feature

2018-08-16

2018-10-15

5.1

Feature

2018-07-16

2018-09-15

5.0

Feature

2018-06-16

2018-08-15

4.10

Extended Support Release

2018-05-16

2019-07-15

4.9

Feature

2018-04-16

2018-06-15

4.8

Feature

2018-03-16

2018-05-15

4.7

Feature

2018-02-16

2018-04-15

4.6

Feature

2018-01-16

2018-03-15

4.5

Feature

2017-12-16

2018-02-15

4.4

Feature

2017-11-16

2018-01-15

4.3

Feature

2017-10-16

2017-12-15

4.2

Feature

2017-09-16

2017-11-15

4.1

Feature

2017-08-16

2017-10-15

4.0

Feature

2017-07-16

2017-09-15

Desktop and mobile app compatibility#

Mattermost desktop and mobile apps are backwards compatible; however, we strongly recommend updating to the latest version for an optimal user experience. The latest versions include the latest security fixes, and are compatible with the oldest supported extended support release of Mattermost Server to ensure backwards compatibility.

Please review the desktop app changelog and the mobile app changelog notes for any self-hosted or Cloud-specific version requirements for features and functionalities, as well as notes on security fixes.