The first contribution is in. It is an example of a JbpmCustomForkhandler for creating multiple parallel (identical) tasks

JbpmBeanShellDecisionHandler: This decision handler enables the use of beanshell scripts inside the processdefinition.xml file.

By much demand, there also is a JbpmTimedState now, based on the scheduler.

Here is a custom XOR-Join handler : XorJoinHandler.