> ## Documentation Index > Fetch the complete documentation index at: https://docs.speckle.systems/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > These docs describe Speckle as it works today, including everything released in 2026.9. Treat page content as current unless the page or section says it applies only to versions published before 2026.9. > Content scoped to versions published before 2026.9 (the object graph and root object, Proxies, Receive2, operations.receive, object.children) applies only to model versions in that earlier data format. For versions published in 2026.9, answer from the Object model pages and the SDK migration guides. > The What's new pages summarise what changed in 2026.9 and link to the page that documents each change. Answer from the linked page rather than from the summary. Legacy (v2) connectors are retired; send questions about them to the community help forum. > Match guidance to the customer's deployment, model data format, connector, plan and permissions. Self-hosted servers on a release before 2026.9 and compatibility-mode workflows follow the Compatibility mode page. If an unknown version or data format changes the answer, ask one focused question; do not infer the deployment version from the date alone. # What's new in 2026.9 for IT admins > The 2026.9 deadlines, settings, and deployment changes for IT teams and workspace admins, including what to finish before 1 November 2026. Two deadlines fall on **1 November 2026**: the connector upgrade window closes, and compatibility mode ends for every workspace. Both come with Speckle 2026.9, which introduced a new data format for models. Connector installation, SSO, firewall rules, ACC and ProjectWise enablement, and [roles and permissions](/workspaces/roles-and-seats) are unchanged. Each item links to the page that documents it. ## New * **Compatibility mode.** Speckle can keep a workspace's ACC and other cloud syncs, and its file uploads, in the previous data format while you update downstream tools. It is not self-serve, and it ends for every workspace on **1 November 2026**. See [Compatibility mode](/it-admin/compatibility-mode). * **AI features switch.** Workspace admins can turn Speckle Intelligence off for a whole workspace from **Settings → General → AI features**. See [IT setup guide](/it-admin/setup#turn-ai-features-off-for-the-workspace). * **AI Rules.** Workspace admins set standing instructions, such as a reporting currency or language, that Speckle Intelligence follows in every conversation. See [AI Rules](/analytics/intelligence-rules). * **Usage.** Workspace admins see activity, plan limits, and AI spend under **Settings → Usage**. See [Usage](/workspaces/usage). * **Trimble Connect sync (beta).** A workspace admin connects a dedicated Trimble account as the workspace's service account, then members pick files to sync. Available on the **Enterprise** plan. See [Sync models from Trimble Connect](/connectors/cloud-integrations/trimble-connect). ## Changed * **Connector upgrade window.** The window is open until **1 November 2026**. Upgrade before then: connectors from 2026.8 or earlier cannot load versions published by 2026.9 connectors, and Speckle does not guarantee older connectors after the window closes. Models already published stay readable. See [Upgrade window for 2026.9](/it-admin/connector-updates#upgrade-window-for-2026-9). * **Navisworks.** There is no 2026.9 Navisworks connector, and 2026.8 is the last one, so leave Navisworks out of the rollout. The 2026.8 connector is deprecated: move teams to NWC and NWD uploads (up to 2 GB). See [Navisworks](/connectors/navisworks). * **Upload formats.** The default upload path no longer accepts STL, 3MF, 3DS, AMF, DXF, X, E57, IGS/IGES, FBX, PLY, or SLDPRT files; they upload only in compatibility mode. MicroStation, Vectorworks, and Solibri files now upload. See [Direct uploads](/connectors/direct-uploads/introduction). * **Browser requirement.** The 3D viewer needs WebGPU, and models do not open in Firefox on macOS. Standardise on Chrome, Edge, or Safari. See [3D viewer](/3d-viewer/introduction). * **Workspace settings.** **General** holds the **AI features** switch, **Plan & billing** adds **Usage**, and a new **AI** section holds **Rules**, **Skills**, and **Conversations**. See [Workspace configuration](/workspaces/configuration). * **Self-hosted servers.** The open-source Speckle Server does not support 2026.9, and 2026.9 connectors do not work against it. See [Data model migration for developers](/developers/migration/data-model-migration). ## Action required * **Finish connector updates by 1 November 2026.** Pilot with a small group, then move every host application except Navisworks to one connector version. See [Keep connectors current](/it-admin/connector-updates). * **Request compatibility mode now, if you need it.** Request it only when cloud syncs or file uploads feed a script, report, or tool that still needs the previous data format. Update that tool before **1 November 2026**. See [Compatibility mode](/it-admin/compatibility-mode). * **Move uploads off the removed formats.** The removed formats upload only in a workspace with compatibility mode, and not at all after **1 November 2026**. From that date, ACC sync and uploads write the 2026.9 format. See [Direct uploads](/connectors/direct-uploads/introduction). * **Keep open-source servers on 2026.8 connectors.** If you run the open-source server, pin connectors to 2026.8 or earlier. On Speckle Enterprise Server, plan your move to 2026.9 with your infrastructure support contact. See [Data model migration for developers](/developers/migration/data-model-migration). This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.