New Conditional Elements: from, collect, accumulate and forall

New Field Constraint operators: not matches, not contains, in, not in, memberOf, not memberOf

New Implicit Self Reference field: this

Full support for Conditional Elements nesting, for First Order Logic completeness.

Support for multi-restrictions and constraint connectives && and ||

Parser improvements to remove previous language limitations, like character escaping and keyword conflicts

Support for pluggable dialects and full support for MVEL scripting language

Complete rewrite of DSL engine, allowing for full l10n

Fact attributes auto-verification for return value restrictions and inline-eval constraints

Support for nested accessors, property navigation and simplified collection, arrays and maps syntax

Improved support for XML rules

Native support for primitive types, avoiding constant autoboxing

Support for transparent optional Shadow Facts

Rete Network performance improvements for complex rules

Support for Rule-Flows

Support for Stateful and Stateless working memories (rule engine sessions)

Support for Asynchronous Working Memory actions

Rules Engine Agent for hot deployment and BRMS integration

Dynamic salience for rules conflict resolution

Support for Parameterized Queries

Support for halt command

Support for sequential execution mode

Support for pluggable global variable resolver

Support for rule break-points on debugging

WYSIWYG support for rule-flows

New guided editor for rules authoring

Upgrade to support all new engine features

Slimmed down dependencies and smaller memory footprint