Release Notes
Release notes provide detailed descriptions of the relevant changes included with each Fusion Server release, including new features, improvements, bug fixes, and more.
Versions
Fusion Server is versioned by major, minor, and maintenance release versions. The table below provides an explanation of these terms.
| Release type | Example version | Description | What is included? |
|---|---|---|---|
Major |
4.0.0 |
Major versions are rare and may include significant changes to the products architecture, deployment, UI, etc. |
✓ Significant product changes |
Minor |
4.1.0 |
Minor versions typically include new features and major improvements, in addition to other changes such as bug fixes. |
𐄂 Significant product changes |
Maintenance |
4.1.1 |
Maintenance versions typically offer various bug fixes. Occasionally, this includes addressed security concerns. |
𐄂 Significant product changes |
| The descriptions above are stated generally and may differ from what is actually included Fusion releases. Always refer to the release notes for full release details. |
Upgrades
Keeping your Fusion deployment upgraded to the latest version enables to take advantage of the latest features, improvements, bug fixes, and addressed security issues.
Process
To upgrade to the latest version of Fusion, see:
-
From Fusion Server 4.2.x
-
From Fusion Server 4.1.x
-
From Fusion Server 4.0.x
-
From Fusion 3.1.x
Deprecations and Removals
Every Fusion release adds or improves Fusion features and functionality. Occasionally, we also remove features and functionality. Before doing so, we “deprecate” them. Deprecated features are no longer officially supported by Lucidworks and will not be updated or maintained. In many cases, new features are introduced which replace and/or improve the functionality of the deprecated feature.
See Deprecations and Removals for a list of active deprecations and removals.
We give a minimum of one minor release cycle before removing a deprecated feature. For example:
-
A feature is deprecated in Fusion 4.1.0, so it will not be removed before Fusion 4.2.0
-
A feature is deprecated in Fusion 4.1.1, so it will not be removed before Fusion 4.2.0
| Deprecations are typically made in major and minor releases only. Maintenance release deprecations are less common. |