> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ionworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 2025 11 17

<Update label="November 17, 2025" description="Live pipeline loading, simpler simulation API, and current variable support">
  ## Live pipeline loading

  Pipeline pages now load progressively — only the next pending element is fetched at a time, with live updates as elements complete. This makes working with long pipelines much more responsive.

  ## Simpler simulation API

  The simulation API has been simplified from a two-step process to a single step. UCP input parameters are also now supported directly in simulation protocols, making it easier to configure and run simulations.

  [Find out more →](/simulate/api)

  ## Current variable support in pipeline

  Pipeline objectives now support current as a variable, expanding the set of quantities that can be used in fitting and optimization workflows.

  <AccordionGroup>
    <Accordion title="Studio">
      **Improvements**

      * Data loading on optimization pages improved with proper cleanup on navigation.
      * Job compute time is now logged for performance monitoring.
      * Renamed "model" to "parameterized model" and "equations" to "model" for clarity.

      **Fixes**

      * Fixed optimization v1 data conversion error that caused the optimization list to appear empty.
      * Fixed design optimization bugs.
      * Fixed pipeline multistart plots consistency.
    </Accordion>

    <Accordion title="Pipeline">
      **Improvements**

      * Reverse parser now handles design objectives and metrics.
      * DesignObjective updated to use a metric dictionary format.
      * Sensitivity analysis improvements: fixed second-order calculation and added log-transform support.
      * Initial guess distributions (Log, Uniform) added for simpler configuration.
      * Simulation objectives can now expose additional output variables.
      * Multiple statistics supported in validation reports.
      * Initial voltage can now be inferred from the measurement data when evaluating custom parameters.
      * Parameter dependencies made optional for simpler objective definitions.

      **Fixes**

      * Fixed a validation issue with objective inputs.
      * Fixed symbol evaluation in MSMR models.
      * Fixed time\_series and steps key validation.
    </Accordion>
  </AccordionGroup>
</Update>