Please find the below information:

• Regular support for Mendix 9 ends when Mendix 12 is released. 
• Once all support has ended, deployments of Mendix 9 applications to the Mendix Cloud will be blocked.
• An additional year of Extended Support may be available for Mendix 9. If offered, deployments will continue to be supported throughout the Extended Support period.
• After all support has ended, Mendix will no longer consider Mendix 9 deployments when making changes or improvements to the platform. As a result, Mendix 9 applications may stop working unexpectedly and without prior notice. 
• A Mendix 9 application that is already deployed in Production may continue to run after the end of support, but this is not guaranteed indefinitely. At some point, Mendix may decide to shut down all Mendix 9 applications running on the Mendix Cloud, similar to what was done for Mendix 7 applications.
• If such a decision is made, Mendix will communicate it well in advance, providing sufficient notice and guidance to plan the migration.