TrueNASTrueNAS Nightly Development Documentation
This content follows experimental nightly development software. Pre-release software is intended for testing purposes only.
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25.04 (Fangtooth) Development Notes

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25.04 Fangtooth


This page tracks the latest development roadmap and notes for the future TrueNAS major version 25.04 (Fangtooth).

See the stable 24.04 (Dragonfish) or early development 24.10 (Electric Eel) release notes for information relating to that version.

Features

This page is being updated to follow development changes for TrueNAS 25.04 (Fangtooth). Check back soon for updates.

Release Schedule

The release names and dates provided here are tentative and can change at any time.

TrueNAS™ | Enterprise™

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Software Lifecycle

TrueNAS Quality Lifecycle

TrueNAS releases follow a general adoption guideline for their lifetime. Starting with the NIGHTLY builds, each stage of a major release incorporates more testing cycles and bug fixes that represent a maturation of the release. With each version release stage, users are encouraged to install, upgrade, or otherwise begin using the major version, depending on the specific TrueNAS deployment and use case:

Release StageCompleted QA CyclesTypical UseDescription
NIGHTLY0DevelopersIncomplete
ALPHA1TestersNot much field testing
BETA2EnthusiastsMajor Feature Complete, but expect some bugs
RC4Home UsersSuitable for non-critical deployments
RELEASE6General UseSuitable for less complex deployments
U17Business UseSuitable for more complex deployments
U2+8Larger SystemsSuitable for higher uptime deployments

The Software Status page shows the latest recommendations for using the various TrueNAS software releases.

25.04 Nightly Development Changelog

Coming soon

The TrueNAS REST API is deprecated in TrueNAS 25.04 and replaced by the TrueNAS API Client. Full removal of the REST API is planned for a future release.

This new API Client is not the deprecated TrueNAS CLI (midcli). The API Client is integrated in TrueNAS 25.04 onwards. It provides the midclt command-line tool, and the means to easily communicate with middleware using Python to make calls through the websocket API.

This API client allows for better integration of TrueNAS into third-party solutions. Use this as a reference for projects that require direct TrueNAS integration.

TrueNAS API documentation remains available in the UI and through the TrueNAS Documentation Hub.