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Trello Release Notes

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Last updated: Mar 9, 2026

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  • Feb 20, 2026
    • Date parsed from source:
      Feb 20, 2026
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Announcement] Upcoming AGC app security requirements and 2026 updates to Cloud App Security Requirements

    Atlassian announces baseline security requirements for AGC apps and updates Cloud App Security 2026 with AI, data, and supply chain safeguards.

    We are introducing baseline security requirements for Atlassian Government Cloud (AGC) apps, which will take effect on 31 Mar 2026. If you have any questions regarding these new standards, please contact us here: https://ecosystem.atlassian.net/servicedesk/customer/portal/34/group/109/create/579

    We’re also publishing our annual update to the general Cloud App Security Requirements for 2026, which includes new provisions for AI security, data protection, and supply chain security. See More details for highlights on this update.

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  • Sep 15, 2025
    • Date parsed from source:
      Sep 15, 2025
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Deprecation Notice] Trello SCIM API endpoints will be deprecated in favor of REST API endpoints

    Atlassian deprecates the SCIM v2 endpoints /scim/v2/users and /scim/v2/groups after December 10, 2025 and directs users to the REST API for Trello members and related queries.

    Deprecation Notice

    On or after December 10th, 2025, we are deprecating the endpoints:

    • /scim/v2/users
    • /scim/v2/groups

    Please use the REST API to retrieve information on Trello Users or Members, more specifically:

    • enterprises/{id}/members/query
    • members/{id}
    • enterprises/{id}/organizations
    • boards/{id}/memberships
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  • Aug 6, 2025
    • Date parsed from source:
      Aug 6, 2025
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Deprecation Notice] Trello deprecation notice: GET /application/:id/compliance/memberPrivacy

    Atlassian announces deprecation and planned removal of the legacy /application/:id/compliance/memberPrivacy API after 08 Sep 2025 to streamline code and privacy alignment.

    The legacy /application/:id/compliance/memberPrivacy API route will be deprecated and removed after 08 Sep 2025. This change is part of ongoing efforts to simplify our codebase and align with current privacy practices for Trello power-ups and integrations.

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  • Jul 22, 2025
    • Date parsed from source:
      Jul 22, 2025
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Announcement] Trello Glitch Example Projects have been copied to public Bitbucket Repository

    Atlassian shifts developer resources away from Glitch after its shutdown, moving Trello example apps and Power-Ups to a public Bitbucket repo and updating docs to point to the new location.

    Release notes

    For years, we’ve used Glitch to showcase our Trello developer example apps and Power-Ups. Unfortunately, Glitch has announced they are shutting down their app hosting service.

    Because these example projects serve as invaluable documentation for our developer community, we’ve copied them over a public Bitbucket repository so they can continue to be referenced.

    Check it out here! https://bitbucket.org/atlassianlabs/trello-glitch-example-projects/src/main/. Be sure to read the README of that repository.

    We’ve also updated our developer documentation to link to the public repository instead of Glitch.

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  • May 9, 2025
    • Date parsed from source:
      May 9, 2025
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Announcement] Changes to the Trello card detail screen

    Atlassian Trello unveils a refreshed card experience with a side-by-side comments and activity panel and a cleaner card navigation bar. Power-up and automation buttons move to a popover menu for a tidier interface. API remains unchanged but developers should check power-up compatibility with the new card back design; shipping May 2025.

    New panel view for comments + activity:

    Trello is enhancing the card detail viewing and editing experience by introducing several key updates:
    New panel view for comments + activity: Card comments + activity will now be displayed side-by-side with card details and offering users the option to collapse the comments and activity panel for a more focused view.

    Powerup and Automation Card Buttons in Popover Menu:

    Powerup and Automation Card Buttons in Popover Menu: Card buttons created from Trello power-ups / integrations or automations will now be surfaced in a popover menu. This menu can be accessed from the new card navigation bar, providing a cleaner and more organized interface.

    Impact on Power-Ups:

    Impact on Power-Ups: While the API remains unchanged, the redesign may affect third-party power-ups and integrations. Developers are encouraged to review their power-ups to ensure compatibility with the new card back design.

    This initial announcement:

    This initial announcement aims to inform partners about the changes coming to customers this month (May 2025).

    More details:

    More details about the changes to the card back can be found here: https://support.atlassian.com/trello/docs/new-card-back/

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  • Apr 16, 2025
    • Date parsed from source:
      Apr 16, 2025
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Announcement] Introducing OAuth2 to Trello

    Atlassian confirms Trello will move to OAuth 2.0 with three-legged flow, new scopes and token expiry for stronger security.

    We will be replacing Trello’s current authorization mechanism with OAuth 2.0 (3LO) (also known as “three-legged OAuth” or “authorization code grants”). This change will also introduce new scopes, resource restrictions, and token expiry for greater security. Read more on our developer community page - RFC-89: Introducing OAuth2 to Trello!

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  • Apr 11, 2025
    • Date parsed from source:
      Apr 11, 2025
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Announcement] Markdown changes in global power-up directory

    Atlassian updates the markdown parser for the global Power-Ups directory and Trello card editor, advising users to review listings to ensure markdown displays correctly.

    The markdown parser for global power-ups directory has been updated. These changes are also reflected in the Trello card editor. We recommend reviewing your Power-Up listings to ensure your markdown displays as expected. If you need to make adjustments, check out how to format text in Trello.

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  • Nov 14, 2024
    • Date parsed from source:
      Nov 14, 2024
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Removed] Trello no longer accepts websocket connections via querystring authentication

    Atlassian announces Trello websocket auth via appkey+token will end Nov 15 2024; clients must switch to OAuth Authorization header, noting browser sandbox limits.

    Support for establishing a websocket connection via appkey+token pairs supplied via query arguments will end on November 15, 2024. While this continues to be undocumented and unsupported, you may make Websocket connections to Trello, however you will need to switch to providing an OAuth Authorization header for authentication. Note that this isn’t possible in the browser sandbox environment, as the WebSocket API does not have an option to provide custom HTTP headers. You will need to do this from a privileged context, like an app or possibly a browser add-on in the Trello session context.

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  • Aug 21, 2024
    • Date parsed from source:
      Aug 21, 2024
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Announcement] Additional IP ranges for Atlassian Cloud

    Atlassian announces new external client IP ranges 13.35.248.0/24, 13.227.180.0/24, 13.227.213.0/24 for requests from browsers and APIs; no outbound webhooks.

    New IP ranges for external clients

    • 13.35.248.0/24
    • 13.227.180.0/24
    • 13.227.213.0/24

    These ranges won't be used to make outgoing connections from Atlassian Cloud to remote systems, for example, webhooks.

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  • Jul 22, 2024
    • Date parsed from source:
      Jul 22, 2024
    • First seen by Releasebot:
      Mar 9, 2026

    Trello by Atlassian

    [Deprecation Notice] card.idShort will now always be regenerated after board moves

    Atlassian changes idShort: cards moved to a new board get a fresh sequence ID on arrival starting August 1, 2024.

    idShort field restoration on board moves

    Up until now, a card’s idShort field value would be restored to its previous value when the card is moved to a board it has previously been on. Starting 01 Aug 2024 this will no longer be the case. idShort will always receive a new sequence ID on the destination board. This will have no impact on existing idShort values, or on idShort values on cards moved within a single board.

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