Product Life Cycle Policy

Movable Type Product Life Cycle Policy

Six Apart has established a Product Life Cycle Policy to protect Movable Type from the latest threats and vulnerabilities, and to ensure that our customers can always use our products in optimal condition. We hope that you will use this policy as reference information when planning your Movable Type version upgrades and incorporate it into the product life cycle of your system.

We update the Product Life Cycle Policy for Movable Type 9 on October 22 2025\. The policy for Movable Type 8 or before is here.

Movable Type 9 Versioning

The versioning of Movable Type is 9.{minor}.{patch} format, like 9.0.4. The product life cycle milestones are based on minor versions.

Movable Type 9 Release Cycle

• Movable Type 9 repository upgrades minor version every 4 months and releases for internal and Movable Type Cloud Service (For Japan Customer only)
• Movable Type 9 Software and AMI will have new minor versions released every two years, starting one year after the initial release.
  • Movable Type 8 is an LTS (Long Term Support) version and receives an additional two years of security support after its EOM.

Product Life Cycle Milestone

Below are the definitions for life cycle phases.

GA (General Availability)

During the period between GA and EOS (End of Sales), security patches and bug fixes will be released on a regular basis, with official Technical Support available for a fee.

EOS (End of Sales)

EOS refers to the time when Six Apart concludes Sales on its products. After EOS, the versions of the product could not be purchased.

EOM (End of Maintenance)

EOM refers to the time when Six Apart concludes maintenance on its products. While it is possible to continue using the product, basic maintenance will have ended, and the Technical Support from Six Apart will also cease. Please upgrade to the current version to use official Technical Support. After EOM, Six Apart may, at its discretion, provide security updates until EOL for the critical bugs or significant impact on security.

EOL (End of Life)

EOL signifies that a product version has reached the end of its lifespan. It will no longer go under maintenance and will no longer receive bug fixes, security patches, or additional feature updates. Although it is possible to continue using the product, Six Apart strongly recommends upgrading to the current version until EOL, due to security reasons.

Version / Support Phase Chart

Movable Type 9 Support Life Cycle Milestone

In Movable Type 9, only the latest version is subject to maintenance. We are updating our product lifecycle policy with the release of Movable Type 9\. A version released one year after Movable Type 9 will be designated as our new LTS (Long-Term Support) version. Following that, we plan to release a new LTS version every two years.

The LTS version of Movable Type 9 will be supported for a maximum of four years. The EOS is 2 years later from GA. Technical support is provided for an additional year, while security updates are provided for the entire four-year period. Additionally, we will release patch versions with bug fixes for the LTS version every four months until EOS. Non-LTS versions will receive security updates for one year. As non-LTS versions will reach their EOL after this support period, we kindly ask that you keep up with the latest available version.

Below is the diagram of Movable Type 9 Product Life Cycle

For the Movable Type 8 or earlier versions, see Product Life Cycle Policy of Movable Type (MT4-MT8).

Movable Type License

Holders of a Movable Type (MT) license are eligible to use Movable Type 9 (MT9) under the same licensing terms. If your MT license is active, you can use MT9 without the need for an additional license.
The customers of the MT9 license could also download and use the latest Movable Type 8 (MT8). Please note that Technical Support for MT8 will be available until its EOM (Fall , 2027). The security updates for MT8 will continue to be provided until its EOL (Fall , 2029).

Contact Us

Please send any questions concerning the product life cycle policy via following page:

• https://movabletype.com/inquiry/general.html