Release Notes
This chapter contains the release notes for the Drools 8-series.
For the release notes of the previous releases, you can refer to the Drools documentation of version 7.
Drools 8-series release notes
Drools 8-series is a natural evolution of the 7.x-stream, incorporating many features and lessons learned integrating with Kogito and many cloud-native use cases.
Rule Unit
Rule Unit is a central paradigm in the Drools 8-series. You can refer the Migration guide chapter for more information about Rule Unit.
Minimum requirements update
JDK 11 is now the minimum Java version required to compile Drools and make use of Drools.
Maven 3.8.6 is now the minimum Maven version required to build Drools from source, or using kie-ci APIs.
drools-mvel and drools-engine-classic are deprecated
drools-mvel is now deprecated in favor of the executable model. It also means drools-engine is recommended instead of deprecated drools-engine-classic that contains drools-mvel. You can still use MVEL syntax in your rules, so it doesn’t affect how to write rules.
Security Manager deprecation
The Drools features related to the JDK Security Manager will not be further developed, as starting with JDK17, the Java Platform has deprecated the Security Manager for removal. You can refer the Security Manager chapter for more information.
KIE Marshallers notice
The KieMarshallers are still present and working as expected on the release of the Drools 8-series, however we are currently exploring alternative solutions more idiomatic to cloud-native use cases.
KIE Server is retired
KIE Server is no longer a component of Drools 8. For migration, see Migration guide chapter.
Business Central is retired
Business Central is no longer a component of Drools 8. For migration, see Migration guide chapter.
Previous release notes
For the release notes of the previous releases, you can refer the Drools documentation of version 7.