Our effort to build WS Human Task implementation was donated to The Apache Software Foundation. Proposal can be seen here. Apache HISE Project page contains up to date information.
Apache HISE aims at implementation of WS-Human-Task Specification. It stands for Human Interactions Service Engine. HISE reads Human Tasks definitions provided in XML format and distributes issues initiated by External Systems to various Task Operators. The basic scenario for HISE usage is described on the following sequence diagram.