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

# Fusion AI 4.0.1 Release Notes

[localhost link]: http://localhost:3000/docs/4/fusion-ai/release-notes/4.0.1-release-notes

[mintlify link]: https://doc.lucidworks.com/docs/4/fusion-ai/release-notes/4.0.1-release-notes

[old doc.lw link]: https://doc.lucidworks.com/fusion-ai/4.2/439

**Release date:** 28 February 2018

## New features

None.

## Improvements

* **Session rollup job improvements**
  Session rollup jobs now include the `app_id`, `host`, `ip_address`, and `user_token` fields, for use in App Insights.

## Other changes

None.