> For the complete documentation index, see [llms.txt](https://docs.coherent.global/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coherent.global/whats-new/release-history/2026-08.md).

# 2026-08

| UAT release     | Production release |
| --------------- | ------------------ |
| August 24, 2026 | September 7, 2026  |

Expired API keys have a talent for surfacing at the worst possible moment. Spark now nudges you before a key expires, so renewals happen on your schedule instead of production's.

## Notifications for API key expiry

Don't get caught out by expired API keys again!

We have a new configuration that will send a reminder when an API key is within `30`, `14`, and `1` day of its expiry date. To receive these reminders, enable this in the refreshed [Tenant configuration](/tenant-administration/tenant-configuration.md).

<figure><img src="https://2714190325-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fc7fek1ZgAUH5MA3m5pH8%2Fuploads%2F1lsrWoC1YVvZ8KVEWsAk%2FScreenshot%202026-08-12%20112432.png?alt=media&amp;token=1bcfda34-4ccf-4b56-b11d-73e9ab1d7f76" alt="Enable notifications for API key expiration"><figcaption></figcaption></figure>

## More customization for API call downloads

When downloading a large volume of API calls, we have added some new customization options to limit the amount of data to download in order to reduce file sizes and improve performance.

* Metadata only download.
* Choose to keep only inputs or outputs depending on the use case.
* Select only particular outputs to include in the download.

<figure><img src="https://2714190325-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fc7fek1ZgAUH5MA3m5pH8%2Fuploads%2FYW7l5JXssKfCCGJf3aIa%2FScreenshot%202026-08-12%20122721.png?alt=media&amp;token=e08d37cc-a87a-4ba3-8282-6a3a77bae75b" alt="Download API calls"><figcaption></figcaption></figure>

## Notable enhancements

* [Coherent Assistant](https://docs.coherent.global/assistant/) Solver feature is more aligned with the [Neuron](/build-spark-services/neuron.md) [Solve functions (Xsolve)](/build-spark-services/additional-mappings/solve-functions-xsolve.md) algorithms.
* [Coherent Assistant](https://docs.coherent.global/assistant/) Testbed feature will also automatically calculate any [Solve functions (Xsolve)](/build-spark-services/additional-mappings/solve-functions-xsolve.md) present within the workbook for more complete testing comparisons between Excel and Spark results.
* [Coherent Assistant](https://docs.coherent.global/assistant/) the previous interactive "Compare" feature is now called "Diff". The "Compare" feature performs a comparison and returns an Excel file similar to the Version Overview.
* [Options](/navigation/options.md#folder-categories) management interface supports reordering categories.
* [Model Context Protocol (MCP)](/integrations/model-context-protocol-mcp.md) hasadditional tools: API Call History Download as Excel, API Call History Download all as Excel, Testing Center Randomized test case generation, Version Overview Compare.
* [Service APIs](/spark-apis/spark-openapi-specification/service-apis.md#get-api-v1-product-folder-engines-getversions-service) API enhancements for query parameter filters.
* [Testing Center](/navigation/testing-center.md) testbed results comparison can be limited to a subset of outputs.
* [Tenant configuration](/tenant-administration/tenant-configuration.md) features permissions now use a dropdown menu for setting permissible user groups rather than free text.
* [Version Overview](/navigation/version-overview.md) service version comparison can now be done in "reverse" order.
* Security patch updates to address vulnerabilities, ensuring enhanced protection and stability.

## Version number

`v8.60.2`