# What's New ## 2026.1.2 Released 2026-05-21 (beta) * New, improved joint model * Introduces Baseball (Free Object) Tracking as part of the Baseball Module (Bat + Ball Tracking) * New Small/Medium/Large person detector options (available in the Startup window) * New Small/Large joint detector options (available in the Startup window) ### Theia3D * Chessboard Calibration * Advanced option group > Corner Quality Threshold**:** Controls how strict the corner detection is for the chessboard identification. * Preferences > Remove stale IDs after \_\_ frames * New frame interval adjustment sets how many frames without a specific person being tracked are allowed before using a new person ID when they are tracked again. * Preferences > Force Model Symmetry * Added option to force model left/right symmetry after scaling. This will ensure that the lengths of left/right segment pairs in a model are the same. * Preferences > Analysis Bounding Box visualization * When enabled, the Analysis Bounding Box is now rendered in the 3D viewer space and reprojected on the camera views, to aid in defining its dimensions based on the physical capture volume. * Linked and Free Objects * Linked objects refer to objects that are connected to a tracked person(e.g. Baseball Bat) * Free objects refer to objects that are not connected to a tracked person (e.g. Baseball) * Related preferences * Convert Workspaces added to Theia3D (previously available in Theia3D Batch only) ### Theia3D Batch * Save 3D Videos exports videos from the 3D viewer area for specified camera perspectives * Save Results Log produces a results CSV file for the batch analysis, including warnings, errors, successes, and other useful information --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.theiamarkerless.com/theia3d-documentation/whats-new.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.