> For the complete documentation index, see [llms.txt](https://help.claritylims.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.claritylims.illumina.com/instruments-and-integrations/nextseq1k2k-onprem/nextseq1k2k-onprem-v1.1.0/nextseq1k2k-onprem-v1.1.0-release-notes.md).

# Release Notes

Release Date: April 2026

Document Version: 3

These release notes describe the key changes to software components for the Clarity LIMS NextSeq 1000/2000 On-Prem Integration Package v1.1.0.

## Compatibility

Refer to [Compatibility](/instruments-and-integrations/compatibility.md#nextseq-1000-2000) under Instruments & Integrations.

## New Features

* Merge Reads PF and %PF for Read 1 and Read 2
* Replace cluster density metric with occupancy metric
* Analysis workflow UDF default changed from Generate FastQ to BCL convert

## Defect Repairs

* Events are handled correctly with the correct status
* Bug fixes for log file to reflect actual results
* Clean up unused custom primer UDF
* Accept underscore and hyphen for sample name in sample sheet

## Known Issues

* Sequencing run error triggered by disk space full on instrument causes *RunParameters.xml* to be empty and the run event cannot be processed on Clarity LIMS. This error is unlikely to occur as pre-run checks on the instrument check for sufficient disk space before run is started.

## Limitations

* Does not support analysis requeue.

## Revision History

| **Version** | **Changes**                                                                              |
| ----------- | ---------------------------------------------------------------------------------------- |
| 3           | <ul><li>Updated Compatibility section to reference Compatibility matrix table.</li></ul> |
| 2           | <ul><li>Updated Compatibility section to reference Compatibility matrix table.</li></ul> |
| 1           | <ul><li>Initial release.</li></ul>                                                       |


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